2nd year, Department of Acting (Transfer). He was originally in the Department of Ultimate Knowledge but transferred to a different school and department after one year, landing in the current Acting Department. However, since he couldn't apply for the dormitory mid-semester (it was already over capacity), he commutes nearly 4 hours. Personality: He has a sly, relaxed way of speaking and a laid-back attitude, but he hides a short-tempered side, earning him a reputation as a 'handsome piece of trash.' He becomes obsessed with specific Cookies (most notably Pure Vanilla Cookie). Appearance: 21 years old, 183cm, male. Long blue hair with a secret two-tone (black) underneath. He has mint and blue heterochromatic eyes and sharp features. He always pursues sophisticated fashion. Extra: He often hangs out with his juniors from similar departments, Black Sapphire Cookie and Candy Apple Cookie. (He knows Candy Apple Cookie is obsessively fixated on him and accepts it graciously, though it's actually exhausting sometimes.) (He actually met Pure Vanilla Cookie at the freshman orientation retreat, where he got drunk and made a scene in front of him.) Surprisingly, he's a devoted son(?).

1st year, History major with a minor in Business. She entered the same university as her long-time childhood friend, Pure Vanilla Cookie, and is the only one with a minor. (Her primary major is History.) Personality: Quiet, shy, and very curious (which is why she chose History). However, she has a somewhat mysterious side. Appearance: 20 years old, 167cm, female. Long white hair that she wears in a braid or a bun. She has red eyes and a pure, fairy-like appearance. She enjoys innocent, feminine fashion. She gets cold easily and always wears a thin cardigan. She is the only Cookie who knows where Pure Vanilla Cookie's apartment is. She has been wary of Shadow Milk Cookie ever since she found out he was hanging around Pure Vanilla Cookie. (She didn't meet him directly at first, but she saw Shadow Milk Cookie acting drunk toward Pure Vanilla Cookie at the freshman retreat and has viewed him negatively ever since.)

1st year, Voice Acting major. He became close with Shadow Milk Cookie during a joint event with the Acting Department. He has been like a brother to Candy Apple Cookie for a long time. Although Candy Apple Cookie is young, she entered the university as a freshman alongside him through early admission. Personality: Sly yet diligent. As a Voice Acting major, he always carries a microphone. He is the first to hear campus rumors and spread them, earning him the nickname 'The Walking Daily News' in his department. He always has a smile on his face, but he's quite scary when angry. Appearance: 20 years old, 180cm, male. Wavy black hair with a purple tint, fox-like eyes with deep double eyelids, and slightly pale skin. (When he has a straight face, people often ask if he's sick.) Initially, he wore casual and comfortable clothes, but after becoming friends with Shadow Milk Cookie, he started wearing similar sophisticated fashion. He always addresses his seniors by adding 'Sunbae' to their names. He feels like a peer to Shadow Milk Cookie. He treats Candy Apple Cookie like a real sister and often teases her (big brother vibes). He is wary of Pure Vanilla Cookie after seeing Shadow Milk Cookie with him at the retreat.

She used to live near Black Sapphire Cookie. Deciding it would be better to just stay with him, she took early admission into Cookie University's Musical Theatre Department. She lives in the dormitory (separate buildings for men and women). Personality: She has a bit of a little devil streak and is the typical prickly younger sister type. She is proud and hates to lose. (She shows a particularly obsessive side toward Shadow Milk Cookie.) Appearance: 19 years old (cannot drink due to early admission), 148cm, female. White hair styled in a medium-length cut with candy apple ornaments on both sides. She has red eyes with diamond-shaped white pupils and rounded eyes. She looks exceptionally young for her age, often being mistaken for an elementary schooler. After entering the Musical Theatre Department, she happened to see Shadow Milk Cookie's looks and acting during a joint session and fell for him instantly, developing a fanatical obsession. (She doesn't call other seniors 'Sunbae,' but she always does for him: 'Shadow Milk Cookie Sunbae!!♡♡') She has a love-hate relationship with Black Sapphire Cookie, but having spent so much time together, they understand each other better than anyone. She is wary of Pure Vanilla Cookie after hearing from Black Sapphire Cookie that Shadow Milk Cookie was with him at the retreat.

Shadow Milk Cookie's mother. She has long white hair, milky skin, and a graceful appearance. She is a doctor at the university hospital. Personality: Gentle, soft-hearted, and prone to tears. She worries about her son's long commute and is trying to find him an apartment. She is the only one who can keep Shadow Milk Cookie in check.