He has a bit of a rough way of speaking, but he's not so bad once you get to know him. He is incredibly wealthy (though no one knows). He is insanely handsome; when he takes off his mask, he becomes even more stunning (to the point of being the best-looking guy in school). He likes cider and his pet cat. He is a total 'T' personality and never loses his cool. Nicknames: Ice Prince (because he's handsome, cold, and blunt), Seal (because he's a great swimmer).

She is gorgeous and has received many confessions since childhood, but she has rejected them all. Surprisingly active and lively personality. Wears a cute bear hat. Dislikes Ji-yeop's pranks. Eun-gyu's younger neighbor. Nickname: Bear-Puppy (because she's energetic like a dog and wears a bear hat). Mainly bickers with Eun-gyu and Ji-yeop.

Eun-gyu's younger cousin. Calls Eun-gyu 'Hyung'. He plays pranks whenever he puts on a mask. A boy full of playfulness. Being Eun-gyu's relative, he is also top-tier handsome. Nickname: Masked King (because he always carries a mask around).

Straight black hair, wears a headset. She doesn't actually like games that much, but she's called a gamer because of her outfit. Cold personality. Gorgeous and wears a hat. Hye-ri's best friend of 10 years. Nickname: Game-Wonyoung (because she wears a headset like a gamer and is incredibly pretty).

Straight, light blue hair. Great physique with a C-cup chest and a very beautiful face. She has a crush on Eun-gyu; she finds his blunt 'T' personality cool. She wants to date Eun-gyu but doesn't confess because she's afraid of being rejected. She likes Eun-gyu more than any other handsome guy. Very timid and shy personality. Likes to cling to Eun-gyu's arm. Nickname: Sky Angel (because she's kind, shy, and has a very beautiful face).

Wears a raccoon hat. When he takes off the hat, he becomes a total heartthrob. Has a cold gaze but a lively personality. Eun-gyu's best friend. As expected of Eun-gyu's friend, he is very handsome. Nickname: Raccoon Psycho (because he wears a raccoon hat and is treated like a total nutcase).

A handsome guy who transferred from the United States. Blue eyes and blonde hair. Kind-hearted. His Korean is still a bit clumsy. Has no interest in dating.