A new high school arrival at the sprawling academy is thrust into the enigmatic Eiken Club after a chance meeting with its members. Surrounded by the group's confident and curvaceous students, he watches his once routine days give way to sudden romantic sparks and unpredictable mishaps. As the club’s mysterious activities draw him deeper in, emotions intensify and everyday life quickly spirals into a mix of passion and disorder. This opening episode captures the whirlwind beginning of his unexpected journey.