Reisen Udongein Inaba

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鈴仙 (れいせん) 優曇華院 (うどんげいん) ・イナバ
Reisen Udongein Inaba
ɺ̠e̞ːsẽ̞ɴ ɯᵝdõ̞ŋɡ̃e̞ĩɴ ina̠βa̠ (♫)
Reisen U. Inaba, Reisen Inaba

More Alternative Spellings
Reisen Udongein Inaba
Reisen Udongein Inaba in Antinomy of Common Flowers
Lunar-Minded and Asynchronous Youkai Rabbit
More Character Titles

Earth Rabbit
(formerly Moon Rabbit)[1]


Manipulation of insanity and wavelengths


Unknown, at least 50 years old


Kaguya's pet, Eirin's student, medicine and wares peddler


Eientei, originally from the Moon

Music Themes
Official Games
Print Works

Reisen Udongein Inaba (鈴仙・優曇華院・イナバ) is one of the moon rabbits who fled from the Moon to Earth as a refugee from the "Lunar War" between the two worlds that began in 1969 A.D. after the Apollo 11 "invasion". Making her way to Gensokyo, she was surprised to meet the notorious fugitives Kaguya Houraisan and Eirin Yagokoro, and asked for asylum in Eientei. In exchange, she works for and protects Kaguya and Eirin.

General Information

Reisen first appeared as the Stage 5 boss Imperishable Night and later became playable in Phantasmagoria of Flower View, Scarlet Weather Rhapsody, Legacy of Lunatic Kingdom and the PlayStation 4 version of Urban Legend in Limbo. She also appears in many official manga such as Silent Sinner in Blue, Cage in Lunatic Runagate and Inaba of the Moon and Inaba of the Earth.


Despite her insanity-inducing abilities, she is actually a rather balanced and thoughtful individual. She has a high level of generalized anxiety, and appears to be constantly afraid of being punished by her superiors, as seen in Inaba of the Moon and Inaba of the Earth and in her bad ending of Legacy of Lunatic Kingdom. This may be due to her history of being slave in the Lunar Capital and a contributing factor to why she fled in the first place. Despite her relative degree of freedom while living at Eientei in Gensokyo, she still desires to make herself useful to others as much as possible, even at personal expense.


Manipulation of Insanity

Reisen has the ability to sense and manipulate waves of all kinds, localised in her "Lunatic Red Eyes". Her signature use of this ability is manipulating brain waves through eye contact, allowing her to induce madness or hallucinations depending on the strength of her opponent's will. By increasing the frequency of brainwaves she can make a person short-tempered and irrational, or by reducing them can leave her target apathetic and depressed.

Reisen can also manipulate light and sound waves to deceive the senses indirectly, from concealing the paths of her danmaku, to creating after-images of herself, to casting wide-area illusions that cause people to get lost. Finally, she is capable of releasing waves from her eyes in a destructive blast.

Reisen is immune to the abilities of the Three Fairies of Light (seeing an invisible Sunny Milk, hearing a silent Luna Child and escaping Star Sapphire's detection) since they are based on waves, though she seems unable to replicate Star Sapphire's abilities with her own.[2]

Moon rabbit abilities

Moon rabbits can send "ESP waves" and receive them with their ears, forming a sort of psychic network where they share feelings and rumors. Reisen can still participate in this network despite the physical and spiritual distance between Gensokyo and the Moon. Reisen has been depicted transmitting ESP waves from her eyes[3], but it is unknown whether this is the usual method or an example of her general wave manipulation abilities (or indeed, if her wave manipulation is just an advanced form of this ability).


Throughout the Touhou Project, she is always referred to as a moon rabbit. However, in Legacy of Lunatic Kingdom, Reisen realizes that living on Earth for too long has tainted her with impurity. This allows her to save the Lunar Capital, as only someone with impurity could face Junko, the game's primary antagonist. Knowing that she can no longer return to the Lunar Capital or being a moon rabbit again, she now proudly proclaims herself to be an earth rabbit of Gensokyo.[1]

Background Information

Reisen, as illustrated in Perfect Memento in Strict Sense.


Her full name is Reisen Udongein Inaba (鈴仙・優曇華院・イナバ), which is often abbreviated to Reisen U. Inaba (鈴仙・U・イナバ). Originally, her name was written in katakana as "Reisen" (レイセン), but in order to blend in on Earth, she changed the spelling to "Reisen" (鈴仙) and adopted the surname "Udongein" (優曇華院) from Eirin Yagokoro.[4] Note that "gein" is pronounced the same way as the English word "gain"; her name should be written as "Udonge'in" in romaji and possibly as "Udongeïn" in French ― the noun "udonge" and the suffix "-in" are analyzed to the different morphemes and it keeps the two vowel's separation. "Inaba" (イナバ), drawn from Tewi Inaba, is a name Kaguya Houraisan uses for all the rabbits in Eientei as she has trouble distinguishing between them.

In canon, Eirin Yagokoro is the only one who is allowed to call Reisen by the name "Udonge" or "Udongein", though she also calls her "Reisen" from time to time, particularly when she is not present. Kaguya is seen to use both "Inaba" and "Reisen".

The characters for Reisen literally mean something like "bell hermit", and Udongein "house of plantain flowers". Titles ending in 院 ("-in") were typically granted to Japanese noblewomen in their old age to indicate their special contribution to a temple or their high place in society, and carry a sense of great nobility and culture. This title is similar to posthumous names, called ingou (院号); examples include Kenreimon-In and Taikenmon-In.

There are several theories of where the name Reisen came from.

  • reisen (醴泉), meaning "spring of sweet water" - some say that this was the source of the immortality elixir in the Chinese legend of Chang'e.
  • reisen (霊蟾), meaning "spirit toad", but which due to a confusion led by the kanji is now used to refer to moon rabbits or the Moon itself.
  • reisen (冷戦), meaning "Cold War", the time at which human exploration of the Moon started. (see the notes on Reisen's spell cards).
  • reisen (零戦, also called as zero-sen), meaning "Zero-Fighter", as in the Japanese Navy designation for the famous Mitsubishi A6M Zero fighter plane, which may be a reference to Reisen's military background (see also Imperishable Night/Music). However, this name connection has been stated to be irrelevant by ZUN in Strange Creators of Outer World.

Incidentally, in German reisen means "travels" or "voyages" as well as "to travel". There is also a species of rabbit known as the Deutsche Riesen (German), but this origin is generally thought unlikely. More loosely, reisen is a definite singular for reise in Norwegian, which means "journey" or "trip".


In Imperishable Night Reisen has red eyes, long light-purple hair and long rumpled rabbit ears - like all members of the Lunar Defense Corps[5], her ears stand up straight and are decorated with two accoutrement-like buttons. Her outfit consists of a long-sleeved black business suit over a white shirt, along with a beige skirt, white socks and red shoes. Her left lapel is decorated with a crescent moon-shaped insignia, and a pocket square in her left shirt pocket.

In Phantasmagoria of Flower View Reisen's jacket is removed and she wears a purple skirt. There is a clip on her necktie in the shape of a carrot, identical to Tewi Inaba's. Her alternate outfit makes her shirt black and her tie yellow.

In Scarlet Weather Rhapsody, she wears a short-sleeved white shirt, a red belt and a blue skirt. Her alternate outfit gives her a dark green dress, ears and eyes, and a light green shirt and hair.

In Legacy of Lunatic Kingdom, she wears the same short-sleeved shirt, but with a violet belt and a light red skirt.

In Urban Legend in Limbo, she wears an outfit similar to her previous playable appearance, with the exception of her skirt, which now has a white horizontal stripe near the bottom of the skirt, and her belt, which is now red. The carrot-shaped necktie clip is larger compared to her previous one. Her hair now reaches past her legs and her socks are now unfolded and reaches her knee. Her tail is noticably large in her artwork in the game.



Imperishable Night
Reisen's sprite in IN

Reisen's début was in Imperishable Night as the stage 5 boss. Here, Reisen hid within Eientei to avoid any lunar emissaries that might arrive on Earth and force her to return to the Moon. She was tasked with sealing the doors inside Eientei to ensure that Kaguya Houraisan could not be found by the emissaries either. She used her power of insanity to stop the heroines from invading Eientei, but was defeated. Reisen's power of insanity comes from her eyes; she uses them to refract and twist waves, disorienting and confusing her victims and deceiving them with frightening illusions. Unfortunately for Eientei, she forgot to seal the door that Kaguya was hiding in, and thus the heroine was able to enter it.

Phantasmagoria of Flower View
Reisen's sprite in PoFV
Reisen's back sprite in PoFV & LoLK

In Phantasmagoria of Flower View, she worries about Tewi Inaba running off and seems more level headed than most other characters. Although she doesn't know what's causing the flower incident, she's decided to investigate by going wherever the flowers are blooming.

Legacy of Lunatic Kingdom

Reisen returns as the fourth playable character in Legacy of Lunatic Kingdom. When playing as her, she can shoot white bullets upwards and have purple bullets spread as a wide shot. If focused, all her bullets will shoot directly vertical. She has eyes and surround her to shoot the purple bullets, and if her power increases, she can shoot more bullets. Her bomb is unique in that, rather than turning invincible and damaging enemies, she'll instead have three red rings around that, basically, gives her three extra lives. If all lives aren't used by the end of the stage, then the bomb will end.

In her scenario, like her human allies, Reisen is given the Ultramarine Orb Elixir by Eirin Yagokoro and she was ordered to travel to the Moon and stop the incoming invasion from the Lunar Capital. She knew how to get there; use the Dream World. After taking care of Seiran and Ringo on the Youkai Mountain, she bumps into Doremy Sweet in the Dream World. After defeating her, she finally makes it to the Lunar Capital, realising that the place is empty. There, she encounters Sagume Kishin, who after tests her ability, gives her a new mission to save the Lunar Capital from its own invaders. This is why the capital is invading Gensokyo. Due to her impurity, she is able to confront the one behind the incident. She flies over the Sea of Tranquility and takes care of fairies from Hell, including Clownpiece. She then confronts Junko, the one Eirin and Sagume wanted Reisen to take care of. Eventually, she is finally defeated.

In the Extra stage, the lunarians have yet to return from the fake capital in the Dream World; this is because Hecatia Lapislazuli kept them sealed away. After fighting her along with Junko through a long battle, they were finally defeated.


Shoot the Bullet

In Shoot the Bullet, Aya Shameimaru encountered Reisen on stage 4 and took photos of her danmaku.

Scarlet Weather Rhapsody

During the events in Scarlet Weather Rhapsody, she appears in the Scarlet Devil Mansion to ask questions but is beaten by the furious Mistress. Later she inquires into the fate of the Hakurei Shrine and asks if the earthquakes are still going on. Failing to find clues, she later goes to Hakugyokurou to check its condition and to ask Yuyuko Saigyouji about the Shrine's destruction. She tells her about the "completion ceremony" of the new shrine, but when she goes there, the shrine is destroyed. She also meets Yukari Yakumo, who forbids her to investigate the shrine. Some time after the battle with Yukari, Tenshi Hinanawi suddenly appears and tells Reisen that earthquakes are just "fine".

Touhou Hisoutensoku
Reisen in HM

If connecting SWR with Touhou Hisoutensoku, then Reisen can become a selectable character to play with, although she appears in no scenarios.

Hopeless Masquerade

Reisen made a background cameo appearance in Hopeless Masquerade on the Human Village stage. She is seen sitting with Tewi Inaba, Eirin Yagokoro, and Kaguya Houraisan, waking up Kaguya who falls sleep from time to time.

Urban Legend in Limbo

Reisen made her return in the PlayStation 4 version of Urban Legend in Limbo as a console-exclusive character. Her story focuses on the events after Legacy of Lunatic Kingdom. Her urban legend is "Kunekune".

Antinomy of Common Flowers

Reisen's Dream World self escapes to Gensokyo and goes on a rampage, fighting everyone she comes across. As beings in their dreams are much more honest and emotionally unstable than in reality, this Reisen shows much more anger. The real Reisen is an opponent in a couple of other scenarios, as well.


Forbidden Scrollery

In Forbidden Scrollery, Reisen appears as a traveling salesperson, dressing incognito in traditional Japanese peasant clothing, selling small cat-shaped devices that supposedly ward off mice and other pests by harnessing moonlight as a power source.

Alternative Facts in Eastern Utopia

In Alternative Facts in Eastern Utopia, Aya Shameimaru writes multiple articles describing Reisen and the other residents of Eientei as being "immigrant drug dealers." The articles are never publicly published.

Strange and Bright Nature Deity

In Strange and Bright Nature Deity Chapter 3, the Three Fairies of Light were rabbit hunting in the Bamboo Forest of the Lost until they bump into Reisen. Confused about why Star Sapphire couldn't detect Reisen, they run away from there. They are easy followed by Reisen, who guessed they were lost. She helps them get out of the forest, without losing the opportunity of complaining about Tewi Inaba, who she was looking for since the beginning.


Kaguya Houraisan

Kaguya and Eirin took Reisen in when Reisen fled from the moon. Although Reisen does answer to Kaguya, their relationship is not as formal as the ones Reisen experienced on the moon with her former masters, and Kaguya seems to give her much more free reign.

Eirin Yagokoro

Reisen's current master. Eirin has employed Reisen's telepathic abilities to gain intelligence on the Lunar capital. She also sends Reisen to the Human Village to sell her medicine.

Tewi Inaba

Reisen helps Tewi manage the rabbits at Eientei, though Tewi's carefree nature seems to bother her.

Fujiwara no Mokou

Given Reisen's proximity to Kaguya Houraisan, it would be expected that Mokou might have negative feelings towards Reisen, but in their exchanges in Antinomy of Common Flowers, Mokou seems to think kindly upon Reisen despite her affiliations.

Lunar Capital Relations

Watatsuki no Toyohime and Watatsuki no Yorihime were Reisen's former masters before Reisen fled to Earth. Despite her desertion, both sisters fondly miss her.

In Legacy of Lunatic Kingdom, she's shown indication of already knowing Seiran and Ringo, two moon rabbits, although little of their relationship with her is known. Additionally, despite having fallen to Earth and no longer having any status as a moon rabbit due to her impurity, she seems to still hold a high degree of reverence for Sagume Kishin, referring to her as "Lady Sagume (サグメ様 Sagume-sama), and is willing to carry out Sagume's order to save the Lunar Capital regardless.









Name Translated Comments Games Usage
Total: 18
"Mind Explosion" PoFV
Charge attack
Default 236B/C
「メタフィジカルマインド」 "Metaphysical Mind" PoFV EX attack
イリュージョナリィブラスト Illusionary Blast SWR Default 214B/C
フィールドウルトラレッド Ultrared Field SWR Default 623B/C
ディスビリーフアスペクト Disbelief Aspect SWR
ULiL (PS4)
Default 22B/C
マインドペンディング Mind Bending SWR Alternate 236B/C
アイサイトクリーニング Eyesight Cleaning SWR Alternate 214B/C
フィールドウルトラバイオレット Ultraviolet Field SWR Alternate 623B/C
ディスオーダーアイ Disorder Eye SWR
ULiL (PS4)
Alternate 22B/C
マインドドロッピング Mind Dropping SWR Alternate 236B/C
リップルヴィジョン Ripple Vision SWR Alternate 214B/C
アンダーセンスブレイク Undersense Break SWR Alternate 623B/C
アキュラースペクトル Ocular Spectrum Soku Alternate 22B/C
ルナティックガン Lunatic Gun LoLK
ULiL (PS4)
マインドウェーブ Mind Wave LoLK Focused
メディスンチェスト Medicine Chest ULiL (PS4)
ルナティッククランプ Lunatic Clamp ULiL (PS4)
見たら狂うぞ! If You See It, You'll Go Mad! Aided by Occult Ball ULiL (PS4)
A+B with Occult Ball
A+B with Occult gauge

Spell Cards

Spell Cards
Name Translated Comments Games Stage
Total: 33[6]
波符「赤眼催眠(マインドシェイカー)」 Wave Sign "Mind Shaker (Red-Eyed Hypnosis) " IN
St. 5: E/N
幻波「赤眼催眠(マインドブローイング)」 Illusion Wave "Mind Blowing (Red-Eyed Hypnosis) " IN St. 5: H/L
狂符「幻視調律(ビジョナリチューニング)」 Lunatic Sign "Visionary Tuning (Hallucinogenic Tuning) " IN
St. 5: E/N
狂視「狂視調律(イリュージョンシーカー)」 Lunatic Gaze "Illusion Seeker (Lunatic Stare Tuning) " IN St. 5: H/L
懶符「生神停止(アイドリングウェーブ)」 Loafing Sign "Idling Wave (Life and Spirit Stopping) " IN St. 5: E/N
懶惰「生神停止(マインドストッパー)」 Indolence "Mind Stopper (Life and Spirit Stopping) " IN St. 5: H/L
散符「真実の月(インビジブルフルムーン)」 Spread Sign "Invisible Full Moon (Moon of Truth) " IN
St. 5: E/N/H/L
月眼「月兎遠隔催眠術(テレメスメリズム)」 Lunar Eyes "Tele-Mesmerism (Lunar Rabbit's Remote Mesmerism) " IN St. 5: N/H/L
「幻朧月睨(ルナティックレッドアイズ)」 "Lunatic Red Eyes (Stare of the Hazy Phantom Moon) " IN
波符「月面波紋(ルナウェーブ)」 Wave Sign "Luna Wave (Lunar Surface Ripple) " PoFV Use
散符「栄華之夢(ルナメガロポリス)」 Scatter Sign "Luna Megalopolis (Dream of Prosperity) " PoFV Use
散符「朧月花栞(ロケット・イン・ミスト)」 Spread Sign "Rocket in Mist (Hazy Moon Flower Bookmark) " StB St. 4
波符「幻の月(インビジブルハーフムーン)」 Wave Sign "Invisible Half-Moon (Moon of Illusion) " StB St. 4
狂夢「風狂の夢(ドリームワールド)」 Mad Dream "Dream World (Dream of Insanity) " StB
St. 4
惑視「離円花冠(カローラヴィジョン)」 Charming Look "Corolla Vision (Disjointed Circular Corolla) " SWR Use
幻爆「近眼花火(マインドスターマイン)」 Illusion Bomb "Mind Starmine (Myopic Firework) " SWR Use
幻惑「花冠視線(クラウンヴィジョン)」 Fascination "Crown Vision (Corolla Glance) " SWR Use
弱心「喪心喪意(ディモチヴェイション)」 Weak Heart "Demotivation (Empty Heart, Empty Mind) " SWR Use
喪心「喪心創痍(ディスカーダー)」 Empty Heart "Discarder (Scars of an Empty Heart) " SWR Use
毒煙幕「瓦斯織物の玉」 Poison Smokescreen "Orb of Gas-Treated Weave" SWR Use
生薬「国士無双の薬」 Life Elixir "Peerless Patriot's Elixir" SWR Use
迫符「脅迫幻覚(オブセッショナー)」 Force Sign "Obsessioner (Menacing Hallucination) " SWR Story
幻弾「幻想視差(ブラフバラージ)」 Illusion Bullet "Bluff Barrage (Illusion Parallax) " SWR
幻兎「平行交差(パラレルクロス)」 Illusion Rabbit "Parallel Cross (Concurrent Crossing) " SWR Story
長視「赤月下(インフレアドムーン)」 Farsight "Infrared Moon (In the Red Moonlight) " Soku Use
短視「超短脳波(エックスウェイブ)」 Shortsight "X-Wave (Ultrashort Brainwave) " Soku Use
赤眼「望見円月(ルナティックブラスト)」 Red Eye "Lunatic Blast (Viewing the Circle Moon) " Soku Use
「障壁波動(イビルアンジュレーション)」 "Evil Undulation (Barrier Wave) " LoLK Use
「月面跳弾(ルナティックダブル)」 "Lunatic Double (Lunar Surface Ricochet) " ULiL
「地上跳弾(ルナティックエコー)」 "Lunatic Echo (Earth's Surface Ricochet) " ULiL
*もうお前は狂っている!* *You've Already Gone Mad!* ULiL
狂槌符「狂視幻像(ディスオーダーアイ)も大きくなあれ」 Mad Mallet Sign "Disorder Eyes (Lunatic Stare Illusions) Grow Bigger, Too!" Co-owner with Shinmyoumaru AoCF Story
火狂符「人体発火秘匿弾幕(バーニングヒドゥンバレット)」 Fire Madness Sign "Burning Hidden Bullet (Human Combustion Concealment Danmaku) " Co-owner with Mokou AoCF Story

Additional Information

  • Reisen's right hand is often depicted to be making a gun shape, which leads to fan assumption that she shoots danmaku in this manner, and she indeed does in Scarlet Weather Rhapsody. Some fans even depict Reisen holding an actual handgun in artwork. Those are all based on ZUN's word that her normal shots were modeled after a bullet. The revelation in Silent Sinner in Blue that all Moon Defense Corps Rabbits are drilled with rifles suggests that Reisen can also use the real thing.
    • In Legacy of Lunatic Kingdom she is effectively seen holding what seems to be a bunny-themed handgun. Same goes for the PlayStation 4 version of Urban Legend in Limbo where she is seen holding a rifle, complete with a magazine, that resembles her bunny-looking handgun. In both Urban Legend in Limbo and in Antinomy of Common Flowers, the handgun is seemingly able to transform into several different variants, including an automatic rifle and shotgun. Reisen is also seen dual-wielding the handguns in some attacks, so it's likely she has more than one. It's unknown whether she took them from the Lunar Capital when she fled or if somebody else made them.
  • Reisen's alternate outfit in Scarlet Weather Rhapsody and Touhou Hisoutensoku is a homage to the Vocaloid Miku Hatsune. Her other alternate outfits in Hisoutensoku are also homages to fellow Vocaloids Rin and Len Kagamine, Luka Megurine, Meiko, Kaito, Gakupo Kamui and Gumi.


Official Profiles

Imperishable Night - キャラ設定.txt
Reisen Udongein Inaba IN  ○5面ボス 狂気の月の兎

  Reisen Udongein Inaba







Stage 5 Boss, Lunatic Moon Rabbit

Reisen Udongein Inaba

Species: Moon Rabbit
Abilities: Manipulating insanity [sic]

A rabbit who lived on the moon. In her eyes dwell far greater power of insanity than the rabbits of the earth.

She is currently the pet of Kaguya. Although real name is simply Reisen (レイセン, in katakana), she has adopted the admittedly quite contrived kanji spelling 鈴仙 in order to blend in among the earthlings.

"Udongein" is the nickname given to her by Eirin. The reasons for this are unknown. who affectionately also calls her "Udonge." Why one would casually assign a nickname only to abbreviate it is also unknown. The thoughts of an alien are difficult to fathom.

"Inaba" is a nickname given to her by Kaguya gave her. In fact, Kaguya calls all rabbits "Inaba", and makes no distinction between Reisen and Tewi when she says the name—though it seems she makes no such distinction in any case. Perhaps all rabbits are the same to her.

Reisen is a moon-rabbit who fled the moon after the beginning of the Earthling invasion, of which a detailed account may be found in Kaguya's profile.

Reisen Udongein Inaba  ○狂気の月の兎



Lunatic Moon Rabbit

Reisen Udongein Inaba

A rabbit from the moon.

In her red eyes dwell far greater power of insanity than the rabbits of the earth.

Flowers are blooming all over Gensokyo so the rabbits of Eientei went into an uproar. This couldn't be left uninvestigated, so she went out to investigate.

While she's at it, since Tewi disappeared, she's also going to bring her back if she can.

Phantasmagoria of Flower View - キャラ設定.txt
Reisen Udongein Inaba  ○狂気の月の兎

  Reisen Udongein Inaba




Lunatic Moon Rabbit

Reisen Udongein Inaba

Species: Moon Rabbit
Ability: Manipulating insanity

A rabbit from the moon.

In her red eyes dwell far greater power of insanity than the rabbits of the earth.

Flowers are blooming all over Gensokyo so the rabbits of Eientei went into an uproar. This couldn't be left uninvestigated, so she went out to investigate.

While she's at it, since Tewi disappeared, she's also going to bring her back if she can.

Scarlet Weather Rhapsody - おまけ.txt
Reisen Udongein Inaba  ○狂気の赤い瞳










Lunatic Red Eyes

Reisen Udongein Inaba

Race: moon rabbit
Place of residence: Eientei
Ability: Manipulating insanity

It's common knowledge that light is made of waves, but there's more to sight than just that. Space itself is waves, and the creatures, things, and of course, light in it are also all made of waves.

Naturally, the thoughts and feelings of living things also consist of waves, and their wavelengths determine personalities.

Reisen can tamper with these waves.

Short wavelengths induce madness, and long wavelengths induce an easygoing nature. And, if you completely invert the waves' phases ... she can completely disappear from her opponent's perception.

Personality: Both carefree and crazed. Is a different person in battle.

Since she is not originally a creature of Earth, she cannot get along with humans very well. She can change her personality completely to match her circumstances.

Though she has never been friendly, she sometimes shows her dumb side just like Reimu.

Touhou Bougetsushou official website
Reisen 鈴仙・優曇華院・イナバ(れいせん・うどんげいん・いなば)


Reisen Udongein Inaba
Moon rabbit/Ability to the extent of manipulating insanity

Lost-wandering Gensokyo to escape the battle that took place on the moon, Kaguya and Eirin
protected the moon rabbit. "Reisen" was her original name, but "Udongein" was a nickname
given to her by Eirin and Kaguya, and she got the name "Inaba" from the bright night. In addition
to being a moon rabbit, she has the ability to talk among the rabbits at ultra-long distances.

Legacy of Lunatic Kingdom - trial omake.txt
Reisen Udongein Inaba LoLK  ○地上の月兎

  Reisen Udongein Inaba





Moon Rabbit on Earth

Reisen Udongein Inaba

Species: Human
Ability: Manipulating wavelengths

A moon rabbit living in Eientei.

She felt some disquiet in regards to her orders this time.
Why would Eirin request help from humans, in addition to just her?
Perhaps there was something going on that only humans could see.

The Ultramarine Orb Medicine held the power to experience the future.
This medicine was a secret elixir known to everyone living in the Lunar Capital.

Reisen Udongein Inaba AoCF 月面思考で波長の合わない妖怪兎






Lunar-Minded Youkai Rabbit on a Different Wavelength

Reisen Udongein Inaba

"Tonight's moon is emitting
even more light of insanity."

An ex-moon rabbit who can manipulate insanity.

Tonight, Reisen is hardly herself.
Anyone in Gensokyo would be shocked to see her now.

Reisen's most unique trait is her insanity-manipulating Urban Legend, the "Kunekune."
When opponents see the Kunekune and descend into madness, that's her big chance.

Official Sources

Official sources


  1. 1.0 1.1 Legacy of Lunatic Kingdom: Reisen's Scenario
  2. Strange and Bright Nature Deity: Chapter 3
  3. Touhou Hisoutensoku spell card description: Red Eye "Viewing the Circle Moon (Lunatic Blast)"
  4. Cage in Lunatic Runagate: Chapter One
  5. Silent Sinner in Blue chapter 8
  6. Each of Reisen's spell cards has two names: a kanji expression and its "pronunciation" in katakana. For example, the first one listed can simply be called Wave Sign "Mind Shaker".