Morooka Moro

As sadomasochistic yakuza enforcer Kakihara searches for his missing boss he comes across Ichi, a repressed and psychotic killer who may be able to inflict levels of pain that Kakihara has only dreamed of.

Human resources consultant Tsubaki Mako has been dubbed the "devil of human resources" for her iron-fisted ways. She struts her way into a well-established firm and tackles sexual harassment, power harassment, bitter rivalries between factions, and monstrous employees, all of which are issues that can strike any company, with her extreme methods. Mako is like a devil who solves problems with her bold tactics.

Hirayama seems utterly content with his simple life as a cleaner of toilets in Tokyo. Outside of his very structured everyday routine he enjoys his passion for music and for books. And he loves trees and takes photos of them. A series of unexpected encounters gradually reveal more of his past.