Niijima, a shy freshman, joins the school's literature club and develops a crush on the kind president, Sakura. However, Sakura hides a dark secret: she is being sexually coerced and blackmailed by three delinquent upperclassmen who joined the club on the condition that she submit to their desires to prevent the club's disbandment. During a beach training camp, Sakura must endure their abuse in secret, desperately trying to hide the truth from the innocent Niijima.
During a literature club training camp, President Shiori is coerced into sexual servitude by several club members through blackmail. While she manages to start a sweet, innocent romance with the shy Niijima, the other boys use compromising videos to force her back into the clubroom. Trapped by their threats, Shiori is forced to balance her new relationship with her degrading role as the club's shared toy.