A young girl named Sato watches on television as a man named Tomoki states brazenly at a press conference that he hopes convicted murderer Mitsuo is eventually placed back into society so that he can kill him with his bare hands.
Ren struggles with the death of his longtime friend Kaoru. He finds a painting of a girl that Kaoru left behind. Ren sets out on a journey to find the girl.
Teenage stepsisters Yui and Ai form a close bond as a result of the neglect and abuse from their respective parents. Fearing separation from each other when their parents plan to divorce, they run away together to Tokyo and, in order to survive steal a briefcase which they later discover belongs to the yakuza. This puts them in great danger. Tanida, a kind-hearted yakuza member, comes to their rescue and becomes the protective and loving parent figure they never had. But for how long will he be able to save them from harm?
