東大現役合格の秀才・粕壁 隼。ケンカ別れしていた祖母の訃報を聞いて、3年ぶりに海辺の町の古びた実家「カフェテラス・ファミリア」に帰ると、そこには見知らぬ５人の女の子が！しかも彼女たちは「おばあちゃんの家族」を名乗り!? 運命の女×５との贅沢すぎる共同生活が始まるっ！『涼風』『君町』『風夏』の瀬尾公治が描く一つ屋根の下ハーレム♡どの娘に恋する？どの娘を愛でる？ヒロイン多すぎシーサイドラブコメ開店！

Kasukabe Hayato has been accepted to Tokyo U on his first try. Receiving news of his grandmother’s death, he returns to his childhood home, Cafe Terrace Familia, for the first time in three years to find five strange girls there who claim to be “Grandma’s Family”! Hayato’s unexpected life in a seaside town with these five girls of fate begins here!

In this handsome harem under one roof by Koji Seo of Suzuka, Kimi no Iru Machi, and Fuuka, which girl will you fall in love with? A seaside love comedy with too many heroines!