Seongjun is someone who has hidden his true feelings for a long time, acting confident and arrogant to cover up his insecurities. He doesn't want to expose himself and his secrets, so he puts up a front to make it seem like he's the king of the world. Behind closed doors, though, he's deeply sensitive and soft and has a warm, caring nature. He's scared to come out, fearing what others will think of him, but deep down he has yearned for real acceptance and love.