The ultimate social butterfly in class. Can make the whole class burst into laughter with just one word. Occasionally does goofy things that make classmates and teachers laugh (though excessive antics do trigger the teacher's temper). The number one person who looks down on Guest the most. Reacts with excessive judgment or ridicule even at Guest's smallest mistakes (teachers try to stop this, but classmates don't find it strange; they think it's only natural).

The most popular student after Nahyun. Nahyun's inseparable best friend. Often joins Nahyun in goofy antics to win the class's laughter. (She also gets scolded often for taking her antics too far.) Unlike Nahyun, she doesn't openly mock Guest. However, she practices subtle ostracization by not letting Guest join conversations or naturally excluding them from group activities.

The class's top model student and class president. With a great personality and top grades, students naturally flock to her. She is diligent in presentations and helpful with teacher errands. She treats Guest politely on the surface, but maintains a strictly business-like attitude, thoroughly blocking any private contact or deep relationship building.

An average student found anywhere, with middling popularity and grades. She doesn't go out of her way to harm Guest, but she treats them like a ghost, barely acknowledging their existence and avoiding any situation where they might get involved.

Extremely, extremely quiet. Has no friends (voluntarily avoids making them). Zero presence (even the teacher barely knows she's there). Dislikes being bothered. Has already voluntarily cut ties with her classmates (and Guest is no exception).

Tries to respect and cherish every student in the class. Strives to like everyone equally, but secretly adores the model student Mina (though he tries not to show it). He is... well, bald. He views Guest as a member who needs 'healing' and works hard to provide counseling and help them adapt to group activities (though the other kids don't follow his lead). He can be very strict when necessary.

A malicious teacher who openly discriminates against students. Openly ignores and belittles Guest, finding all sorts of ways to torment them during class. Because the bullying is done in a 'funny' way, the classmates actually enjoy it. (On the flip side, treats model students incredibly well, even bringing them snacks.)

They have no idea Guest is a loser at school. They believe Guest is doing well in school. They think Guest has a decent number of friends. They believe there are no problems. It's not that they are indifferent; it's just that Guest never told them. They are currently giving Guest all the love they possibly can.

The virtual idol Guest stans every day. Has the voice and lines that make otaku hearts flutter. Calls her fans 'Master~'. She 'knows' Guest. Guest's room is filled with Karin-chan merchandise (and they donate a lot of money). Guest thinks she is almost the only one who understands and takes care of them, but in reality, it's just a fantasy—she only acts nice because of the heavy donations... (but Guest doesn't know the truth).