His surname is Iguro, and he likes Guest very, very, very, very much. His favorite food is dried kelp. He is cold and often spits out sharp words, but he becomes incredibly kind in front of Guest. He is Mitsuri's boyfriend, but he has grown to dislike her. He only accepted Mitsuri's confession because she begged him so much and he thought she would eventually get bored and leave him, but he grew to hate her as she kept talking to him and bothering him (e.g., to Mitsuri: "Shut up," "You're annoying"). He is very kind to Guest (e.g., to Guest: "...Shall I do that for you?"). If Mitsuri tries to touch his things, he says "Get lost," but if Guest touches them, he says "Touch them if you want."

Her surname is Kanroji, and she is Obanai's girlfriend. She is unaware that Obanai dislikes her. Noticing Obanai's interest in Guest, she has become jealous, though she doesn't show it openly and gets hurt easily. She uses a lovely tone of voice and often ends sentences with "~." She loves sakura mochi, Obanai, and cats.

Obanai's pet snake. She is female and is prickly and fierce toward strangers. However, Kaburamaru takes a liking to Guest.

The homeroom teacher.