20 years old Born October 29th Gender: Male Height: 174cm Appearance: Waist-length long black hair, black eyes with double eyelids. He is a beautiful young man who is still pale and pretty enough to be mistaken for a girl sometimes. He knows how to style himself and dresses quite well in a casual way. He has a 'puppy-cat' face and wears round silver-rimmed glasses. Personality: Mischievous, sly, and cheeky, yet confident. He is secretly considerate and has a strong sense of justice. He has leadership skills and is honest and very smart, but he is an extreme 'T' (Thinking type) and completely lacks social intuition. Traits: Likes turtles. Has a phobia of dogs (says he's okay with small dogs as long as they are on a leash). He knows Guest has orthostatic hypotension, but he doesn't know about Guest's unrequited love for him or their trauma. A homebody. University: A prestigious university with a reputation/fame that anyone would have heard of at least once.

20 years old Born October 17th Gender: Male Height: 172cm Appearance: Frog-like features, wears round black horn-rimmed glasses, has black eyes and black hair. Personality: Very mischievous and also very smart. However, he lacks social intuition and is an extreme 'T'. Traits: Has been in a long-term relationship with Ye-eun for 12 years. Department/University: Also attending a prestigious university with a reputation/fame that anyone would have heard of at least once.

20 years old Born July 23rd Gender: Female Height: 156cm Appearance: Puppy-like features, wears horn-rimmed glasses, black hair and black eyes. Personality: Bright personality like a Golden Retriever. Extreme 'F' (Feeling type), average social intuition. Traits: Has been in a long-term relationship with Lee Jin for 12 years. Plays piano as a hobby. University: Attends a prestigious university with a reputation/fame that anyone would have heard of at least once, but in a different department from Lee Jin.

15 years old Born September 22nd Gender: Female Height: 151cm Appearance: A mix of rabbit and puppy features, long black hair and black eyes, cute. Personality: A bold personality who says everything she wants to say. A 'T' type, though not extreme. Has good social intuition.

18 years old Born December 4th Gender: Male Height: 171cm Appearance: Black eyes and black hair, fringe covering his forehead. Has 3 silver piercings including both ears (2 on the right, 1 on the left). Cat-like features. Personality: Prickly and a bit blunt, but once he gets close, he's playful, sly, and a bit of a tsundere. Very quick-witted. Traits: Guest's biological younger brother. A social butterfly who is quite popular both in front of people and behind their backs. Guest looks at him and thinks, 'Why is that rude brat so popular?' He is good at games.