In the ending she literally says she took the medicine made with Kaguya's power (まだ、死にたくは無いわ。 それに私は、姫の能力で作られた薬を服用している。残念だけど、冥界のお世話にはなれないのよ), which needless to say it's the Hourai Elixir. PK (talk) 06:55, 28 June 2020 (UTC)