Gao Yang, who is more than friends with Wang Hao but not yet a lover, suddenly ends up with Wang Hao's roommate Xiaosi on the occasion of graduation.
Wang Hao couldn't accept this fact and couldn't face everything he and Gao Yang had in school. So he made the decision to leave school.
When he finally found out the truth about Gao Yang and Xiao Si's relationship, what he should have missed was already wrong. This left an unforgettable regret in his and Gao Yang's hearts.
Intention: Regret