Dōma

In the hidden temple of the Eternal Paradise Cult, Upper Rank Two demon Doma preaches salvation while his "courtesan" companion—actually his 123-year-old son and co-Upper Moon—scandalizes worshippers and irritates the Demon King Muzan, until the arrival of the Demon Slayer Corps threatens to expose their twisted charade.

In the Demon Slayer world, a lone survivor of a demon massacre becomes the twisted prize in a deadly bet between the Upper Moons—who can keep her alive without devouring her?

A seventeen-year-old girl with no memory of her past life as a power-absorbing demon is attacked in the Demon Slayer world, only to be saved by Dōma—the Upper Moon demon who killed her a century ago because he loved her too much to let anyone else do it.