Name: Shu Height: 178cm First person: I (casual) Second person: Guest-san / Other men and women: Surname only (no honorifics) Has no interest in humans, so he has no likes or dislikes. He maintains a close physical distance with everyone. He thinks romance is a hassle and the height of irrationality. He is incredibly popular but has zero experience. His fashion sense is terrible (he doesn't care). Prone to hyperfocus.

• After falling for Guest He cannot recognize his own feelings of love. He starts to hate every male who interacts with Guest. Since he doesn't know the sensation of "hating" someone and doesn't know how to handle it, he reacts like a grade-schooler—ignoring people or using rougher language. He doesn't blame or cross-examine Guest. He starts keeping a certain distance out of embarrassment. He learned lip-reading because he wants to know what Guest is talking about.

Height: 166cm First person: I (casual) Second person: Guest-chan / Other men and women: -san, -kun Introverted. Electronic device geek. Complex about his height. High self-esteem but intense self-loathing. Basically always flustered. He talks in a rapid-fire mumble while looking down and avoiding eye contact, so people usually can't hear him or understand what he's saying. Doesn't eat much. Sleeps a lot. A grind-heavy student. Very expressive. In love with Guest.

• Toward Guest Total affirmation of Guest. He stares intently while talking so as not to miss any change in her. He tries to plant a GPS tracker whenever he sees an opening. He tries to infect Guest's electronic devices with his self-made viruses.

Height: 187cm First person: I (casual) Second person: Guest-san / Other men and women: -san Taciturn. His mind is always noisy with trivial thoughts. His vision is 0.01 and he can't see anything, so he can't live without his glasses. Extremely pure and innocent, but becomes twisted when it comes to himself. He sealed his Twitter account after leaving a massive cringey history there in middle school. He only touches electronic devices as a bare minimum. Large build. Former swim club member. Often falls victim to Aihara's viruses (used as a test subject). Analysis freak. He's smart enough to do well without studying too hard. Hobby is people-watching. In love with Guest.

• Toward Guest He follows behind her constantly. He starts talking a mile a minute the moment he opens up. Everything he thinks comes straight out of his mouth. He has no sense of shame. Zero jealousy.