Tokyo no Casanova

Tamiko shares a household with her two brothers, her mother, and her grandmother. What she believed to be an ordinary family dynamic changes when she discovers that Akira, one of her older brothers, is actually the illegitimate son of the renowned actress Hanyuu Kaori. Their relationship is not purely sibling, and Akira's growing affection for Tamiko causes her to develop feelings for him as well. The situation becomes more complex when Tamiko's school friend, Yukari, also falls for Akira. Yukari's connection to Akira reveals a surprising truth that astonishes everyone involved, including herself.