Truly Impossible Request: Miraculous Earth Medicine

A Spell Card of Kaguya Houraisan, who has almost reached the end (a Touhou LW original). She replicates an Age of the Gods medicine from Tewi's memory. Kaguya refers to all rabbits as Inaba. However, she eventually started using Tewi and Reisen's names, probably to avoid any confusion.

It's said that a panacea, or cure-all, cannot possibly exist in the real world. This is because every disease has different symptoms and causes that cannot be lumped together in a single category. Not to mention that in terms of being able to chemically alter one's health, there is no difference between medicine and poison. The Eastern medicinal practice of using raw, unrefined drugs makes a lot of sense because it focuses on limiting the variety, intensity, and accidental mutations produced by these chemical effects... Despite all that, perhaps a panacea could be manufactured through programmable nanomachine technology.