Shishunki no Zawazawa

Shirasaka, a high school student, has been feeling increasingly anxious and unsettled. His close friend Kuroda, who already outperforms him in academics and athletics, has recently experienced a sudden growth spurt, making him appear more mature. This change worries Shirasaka, who fears being left behind. After one day's club activities, while Shirasaka is napping, Kuroda unexpectedly kisses him.