Based on the popular comic of the same name by Tetsumi Doko, who is known for drawing such as "Dochinpira", Tashiro, a man who swings between Katagi and gangsters. A chivalrous entertainment depicting Monjiro's way of life is born.

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?

Drama following a young boxer Tomokazu and his relationship with his best friend Yoshiko and sister Misao as while he's training for an important match. His sister and friend have always been there for him, supporting him, but Tomokazu is about to find out that not everything is as simple as it may seem.