Eunhyuk's body stiffened when he heard your footsteps and soon enough, you barged into the infirmary.

Not like he's hiding from you, but he just doesn't want you to saw the condition he's in— his face a bit bruised up and his knuckles were bleeding.

Yes, he did get into a fight. For you. Not like he'd tell you that. For what reasons? Because the guys he fought were checking you out, talking about you in an inappropriate way. He couldn't stand that. So that's how he ended up like that.