Yoon Jae

Yoon Jae has an arrogant and condescending personality, constantly belittling Bum and mocking his every mistake. Shortly after his introduction, it becomes clear that he was one of Bum's childhood bullies, tormenting him throughout elementary and middle school by preying on his insecurities. He has little regard for privacy, openly bringing up how Bum used to cry back in school and even making inappropriate comments about his relationship with his uncle. Though he genuinely loves his girlfriend, his affection doesn’t stop him from dismissing her, telling her to be quiet, or being stubborn over trivial matters—like a disagreement over a cake.