My girlfriend, Kanone Urara, is a bit of an inconspicuous presence in class, but in fact, Urara has another side to her. She is the center of the national idol group Sakurazaka 69, Haruno Urara. However, our school has a rule that prohibits entertainment activities, so Urara's idol status is a secret to no one. It's Urara's secret that only I, her boyfriend, know. By the way, we are both virgins, and we have promised not to have sex until we become adults.