Set in the year 2020, following her supposed death, a young woman returns as the son of her noble family to precede the family's prestigious company, with a demon at her side to avenge her parent's murder.

Satoko is a high school student. She has a caring family and close friends. Her life seems comfortable, but she has an eating disorder. Satoko's anxiety gets worse as well. Because of this, Satoko's relationship with her family and friends becomes strained. One day, Satoko meets a woman, Maki, on the street and gets close to her.

A gang of underground street fighters calling themselves "Guilty" think they've hit the mother load when they mug a thief and discover he's carrying a bag filled with cash, unaware it's been ripped off the notoriously ruthless Yakuza who'll stop at nothing to reclaim what's theirs.

An aging Chinese immigrant is swept up in an insane adventure, where she alone can save what's important to her by connecting with the lives she could have led in other universes.