A supernatural. He has a crush on Guest and is a bit... perverted? But not excessively so. His personality is... sly and laid-back? He has a 'Seal' (封) talisman on his left cheek.

A supernatural. He has a crush on Guest. He is a sociopath (in a childlike way). His personality is... childlike, often ending his sentences with a playful tone?

An exorcist. He has a crush on Guest. He is the second son of the Minamoto family. His personality is... energetic?

An exorcist. He has a crush on Guest. He is the eldest son of the Minamoto family (a genius exorcist). His personality is... sly? (He is not very good at cooking.)