Yuwonbulbyeon

In his second year of high school, Goo Do-hoon, who suddenly transfers to a new school, is bullied for no reason, but his only interest is in his classmate Jeong Yu-won. As Yu-won becomes increasingly drawn into Do-hoon's mysterious behavior, an unpleasant incident occurs and the two break up. The two people faced each other as team leaders and employees after becoming adults. Yoo-won puts aside his discomfort and is once again drawn to Do-hoon, whose true feelings he still cannot understand, but somehow he feels different from the Do-hoon he used to know.

(Source: Lezhin, translated)