Ichika, aiming to get into college, pleads with her homeroom teacher, Mr. Miyahara, for after-school tutoring. Emphasizing her serious and diligent attitude toward studying, she wins his respect and he gladly agrees. Overcome with joy, Ichika innocently throws her arms around the teacher in a tight hug. Meanwhile, Aina, a classmate who secretly harbors feelings for Mr. Miyahara, feels her heart tighten at the intimate scene and grows sullen with jealousy. The story unfolds with subtle tensions in the classroom and complex emotional relationships among the students.