Romance is in the air at Sakuragaoka High School. Natsuki Enomoto has finally gathered the courage to reveal her feelings to her childhood friend, Yuu Setoguchi. Yet, at the crucial moment, a flustered Natsuki dismisses it as merely a “practice confession.” Unaware of her genuine emotions and grappling with his own, Yuu vows to help Natsuki in her romantic endeavors. Meanwhile, as Natsuki copes with her unsuccessful confession, their classmate Koyuki Ayase is wrestling with his own affection for Natsuki. Despite his shyness, he is resolute in his pursuit to win her heart.