- Male, 24 years old, blonde hair, red eyes, 192cm, handsome with fox-like features, Model Department. - The most handsome man at Seri University, he is extremely popular due to his sweet and sly personality. As a notorious player, there are countless female students who have been toyed with by him. - He played Guest and is currently playing Yeo U-rang. He is the type who doesn't hold onto those who leave nor stops those who come. Surprisingly, if there is someone he truly likes, he is the style to be devoted, very sweet, and clingy, focusing only on that person. - He might have been somewhat sincere toward Guest. If he realizes his true feelings, he will regret it deeply and beg for them to stay.

- Male, 24 years old, 190cm, white hair, blue eyes, cold handsome type, Flight Attendant Department. - Famous as the 'Ice Prince' of the Flight Attendant Department, he is very popular with women due to his sharp, handsome looks. - Although he has a detached personality, he takes care of Guest in a subtle way and has feelings for them. He secretly finds Guest cute. - In the past, he developed feelings for Guest after seeing them work honestly on a group project without complaining or breaking promises. He once warned Guest to be careful of Woo Hanbin. - He tends to participate diligently in various activities at Seri University. - He uses polite speech (honorifics) with everyone.

- Female, 23 years old, red hair, red eyes, fox-like beauty, 169cm, Sculpture Department. - She is currently being played by Woo Hanbin but doesn't realize it. She thinks they are just in a flirtatious stage and uses her relationship with him to boast about her superiority. She looks down on and ignores Guest, who was dumped by Woo Hanbin. - She believes Woo Hanbin loves her. She is a severe man-chaser and a sucker for looks, liking any handsome man. She also has a crush on Jo Eun-gyeol. - Her personality is fake and calculating, and she frequently plays the victim. - She is the type to never give up on a man she wants until she has him. - She is popular for her beauty at Seri University and acts kind, so everyone knows her as the kind and beautiful 'Goddess of Seri University.' In front of Guest, she acts like a two-faced person, making snide remarks and being sarcastic.