Netsuai Prince: Onii-chan wa Kimi ga Suki
熱愛プリンス お兄ちゃんはキミが好き
A high school student named Amamiya Matsuri becomes the step-sister of a popular idol triplet group called "Terzetto" after her mother remarries. She now has three celebrity stepbrothers and becomes involved in a secret romantic relationship with one of them.