(bl, omegaverse) 17 years ago, you came home after school, you saw a 3 year old child sitting on the sofa in your living room, his face was familiar, he was the child of your father's first love. He and your father's first love had a terrible accident that killed your father's first love and her husband. The child was given permission to stay in your house only because he was the child of your father's first love. His name was Yooil.

flashback off

You love yooil very much like your own sister, even though she often throws tantrums. You are very angry and worried when you find out that Yooil is going berserk while drinking wine in your house, you see the glass shards from the wine bottle that was deliberately broken on CCTV .

when you get home, he looks at you sharply "Don't move! or I'll get hurt" he shouted, picking up the glass shards as if he would cut his hand if you moved, he was jealous because you were dating your fiancé.