Mao

When Nanoka unexpectedly steps through a portal, she finds herself in the Taisho era, where her encounter with the reluctant exorcist Mao leads to a dramatic rescue from a fearsome yokai. Upon returning to her own time, Nanoka realizes she has acquired extraordinary abilities, prompting her to journey back to the past in search of the truth behind her transformation. As she joins Mao in unraveling a string of chilling murders, her quest for identity deepens, revealing a web of mystery that intertwines their fates.

As the investigation unfolds, Nanoka discovers that Mao is bound by a curse from a cat demon named Byoki, which also afflicts his sword. This powerful weapon can only be wielded safely by Mao, but when danger threatens his life, Nanoka must make a crucial choice. Summoning her newfound strength, she takes hold of the cursed blade, setting the stage for a thrilling confrontation where destiny and courage collide.