Tamiko lives with her two brothers, her mother and her grandmother. It's your typical family, or so she naively thought.
Yet one day she finds out Akira, her older brother, is not her brother at all but the illegitimate child of the famous actress Hanyuu Kaori.
To make things even more confusing, Akira's feelings towards her aren't exactly of the sibling kind and because of his persistence
she starts feeling love for him as well. The plot becomes even more complicated when Tamiko's classmate Yukari falls for Akira.
Yukari though has a connection with Akira that shocks everyone, including herself…