Hisoka didn't return the smile, neither did he look at Ami while he quietly munched on the muffin. He was simply too embarrassed by the girl's show of emotion, regardless of how tame it was in comparison to other people he knew. This was why he liked dealing with insults and anger far better, smiles were too complicated.

"How long have you been here, Mizuno-san?" Hisoka questioned as the bus rumbled to life. ...He really hoped he didn't get carsick. He had been fine on the Queen Camilia, but that didn't mean anything.