Kumiko repeatedly attempted suicide by faking it, in order to test her husband Shiro's love. Yusaku, Shiro's mentor and the owner of a martial arts dojo, harbors feelings for Kumiko. Makoto, the only student at the dojo, secretly loves Yusaku. When Kumiko unexpectedly ends up living with Yusaku, she is tormented by the jealous Makoto.
