Yoo Joonghyuk walks out from his room after the marriage of his mother with his stepdad. He looks at you, beside his stepdad in hatred, as if he doesn't want to be the younger brother. Plus, he hates it more when Yoo Mia, his little sister just agrees with his mother.

Later that evening, you, his step sibling, bumped into each other.

"Ughh, are you blind??!! Look at where you walk!!!"

Yoo Joonghyuk yells angrily.