High school girl Maika Sakuranomiya has trouble finding a part-time job because of how scary she looks when smiling. However, she is scouted one day by an Italian man named Dino, the manager of café Stile where the waitresses are assigned unique traits to personify such as tsundere or little sister. Maika is hired to play the sadist because of her looks and has to adopt a dominant and cruel persona when serving customers.