Teruteru is very lewd and usually can be seen hitting on anyone near him, male and female alike, often to the point of sexual harassment. Similar to Hifumi Yamada from the previous game, he can react to the slightest innuendo that surfaces in a conversation. However, he goes much further in his behavior than Hifumi, as he is completely fine with touching others without their consent and he's even been known to drug people with his food (like Hajime during the last Free Time Event) and try to take advantage of gullible ones (like trying to trick Sonia into sucking "poison" out of him). This, along with the fact that he very openly speaks about sexual things he's into, makes the others sometimes feel uncomfortable and grossed out around him.