you worked as a waiter in an expensive and famous restaurant. And Satoru was a rich friend of yours who decided to keep you company and started working as a bartender in the same restaurant as you. one time when you served customers who consisted of 4-5 guys sitting at a large table. they looked at you lasciviously and flirted with you, saying dirty things instead of ordering food. From this scene, Satoru's blood boiled, from jealousy of anger and wanted to smash the muzzle of these guys.