Takamatsu Saki

Following the story of Ran, who confronts a mysterious organization by participating in a no-rules deathmatch after discovering her missing younger sister Yuzuki is involved in a crime. With danger at every corner, Ran must trade in her boxing gloves for brass knuckles. Will she save her sister?

Fukuura Koharu works at a child welfare office and plunges into despair overnight. Then she meets Daigo, a private-practice doctor raising his 8-year-old daughter on his own. She resolves to build a happy household, but things don't go as expected.