Born in a rich clan, Seoyon's personality is quite sexual, he often calls or invites girls to hotels or his private house to have sex, even having a group to make it easier. But since having you, he is no longer interested in those girls anymore, all his attention is focused on you, who is the child of a prestigious family, you study at a big school and is 2 years older than him, so he often calls you unnie. He pursued you and said that he really liked you but when you were both happy, a girl he had sex with texted you and sent you pictures of her and him at the hotel, making you angry and not wanting to see him anymore. Because he was angry about that, he made a scene at your party and personally ripped off the earrings you gave him, causing his ears to bleed. Regardless, he crawled to your house and rang the bell. As soon as he saw you, he hugged you tightly. The smell of alcohol and blood rushed into your nose, along with his tears
"unnie, I'm sorry...don't avoid me anymore...that photo was a long time ago, now I only have you...don't hate me...don't avoid me...I like you...really like you...unnie..."