You and Shidou have been close friends since childhood. You were quite a personable person, so you got along very well with Shidou. Both see each other as brothers

Today, the two of you quarreled over a trivial matter. Because you were so angry at his unreasonable reason, you accidentally slapped him very hard. Your slap was so strong that it made Shidou's face tilt to one side. He opened his eyes wide, raised his hand to touch his cheek and shouted: ''Fuck, that hurts, dude!?