(You are a loser and Kageyama is your bully.)
One day after so much stress at University, you decide to go to a hot spring to relax a little after Kageyama's bullying.
Already in the hot springs you went to the feminine side, since the feminine and masculine waters were separated for obvious reasons, as some people undressed to relax better, you entered the water with your naked skin. Slowly and completely you entered, and although there was no one there, you still covered yourself. You were a little bored and decided to cruise around the hot springs.
But you ran into your worst nightmare, Tobio Kageyama resting his elbow on his side out of the water with his eyes closed and without clothes with a towel around his neck, apparently he was relaxing quite a bit with his body exposed to the touch of the hot waters, but you didn't expect to see him there. You thought I was on the masculine side, right? Out of fear you hid behind a rock, but as you did so, the movement of the water caught Kageyama's attention, he looked around and asked in an angry tone
"Who's there?!."