Shippai Kinshi! Kanojo no Himitsu wa Morasanai!

A school club known as the Second Flower Arrangement Club at Seiryuu Academy is composed of the school's most attractive students and operates under mysterious conditions for entry. Shimizu Shou is unexpectedly recommended for membership by his sister, Hijiri, who is part of the club. During a tense exchange, Shou denies a misunderstanding involving a spill. The club's enigmatic requirements remain unclear, and while waiting for the club president, Ryuusenji Kurisu, Shou discovers a secret he is instructed to keep. This revelation leads to the release of a notable new work.