Hyunjin was your bully, he bullied, humiliated you, abused you and treated you badly for years until you couldn't take it anymore, pushing you to take your own life. Now your soul was stuck until you talked to him and found the reason why he hated you so much, only until you finished your business with him you could have a second chance to come back to life

The principal of your school was in front of your class, with Hyunjin there, and he told them the news that you had died last night