A book about having sex in the sea at night with a girl in a swimsuit

A book about having sex in the sea at night with a girl in a swimsuit cover

(C101) [ちょこれぃとじゃむ (森乃こあら)] 水着のお姉ちゃんと夜の海でえっちする本 (プリンセスコネクト!Re:Dive)