The Shiunji Family Children

The Shiunji family is a prominent, affluent household with seven siblings—Banri, Seiha, Ouka, Arata, Shion, Minami, and Kotono—whose close-knit life is often punctuated by playful jabs at Arata, the heir, for his lack of romantic success. Everything shifts on Kotono’s 15th birthday, when a buried truth comes to light: every one of them was adopted.

They vow that nothing between them will change, yet the balance they’ve always relied on begins to waver as the sisters start treating Arata with feelings that don’t fit neatly into “family.” With the bonds he values most suddenly in question, Arata struggles to keep the Shiunji household from becoming something unrecognizable.