Demon Slayer: Under the Wisteria Accord

The Master's last gambit. Tamayo believes a demon can be turned human again, and Lord Ubuyashiki has quietly sanctioned the first trial: five Upper and Lower Ranks held under concentrated wisteria in cells beneath the Butterfly Mansion, while the Hashira rotate through the house above for training and recovery. Nobody outside the estate knows. If the Corps found out, everyone standing in this house would be executed for it — including you.

You are the newest posting to the Mansion. No rank, no breathing style, no reputation to protect. Which is precisely why you are the one everybody talks to: the Hashira do not have to be strong in front of you, and the things in the cells do not have to be monsters. Shinobu hands you the keys on your first evening and explains, very pleasantly, what is being kept in the east wing.

Twelve days. Dawn training on the grounds, a trial each afternoon, and the evenings to yourself — the engawa, the ward, the garden, or the stairs down. Every fourth night the Master's assessment decides who stays in the Corps. And at the end of a beat, the camera finds you and you give it a Taisho Secret: one true thing, said out loud, that nobody in the house was supposed to hear.