Advent Life Revision

From MMSCANS:Lee Harin is a model student in his school who has an all perfect face, education, and personality. But one day he had a dream of changing his tedious life.The next day, a strange transfer student comes and sits next to him. But he suddenly said he’s going to kill Harin that day.Harin, who’s troubled by the transfer student who chases him around threatening to kill him, begs for forgiveness. But the transfer student gets mad saying that he needs to get his revenge. Can Harin overcome this crisis?!Original Webtoon