Shika, the daughter of a wealthy family, ran away to Tokyo to escape an unwanted political marriage. One night, just as she was about to be attacked by thugs, she was rescued by a mysterious man named Ikuto. Understanding her situation, Ikuto offered to let her move in with him—even though she had no home or job—and even helped her find work. Shika finds herself drawn to Ikuto, who is kind, smart, yet mysterious. However, Ikuto is a member of the “yakuza” world—a world completely foreign to Shika…!? This is the precarious, pure love story between a “gentlemanly” yakuza who’s actually very caring and a clueless, airheaded young lady.