Lee Suho

Male 18 years old In a word, a mistake by God. When God creates humans, He's supposed to balance the good and the bad, but He must have dozed off while making him... He just poured in every good trait possible. Otherworldly visuals. A brilliant mind. Natural athletic talent. He's beyond perfect—he's "God-perfect"! He's the center of everyone's attention, but he has zero interest in anyone else. He's a man of steel walls, protected by triple-layered bulletproof glass, never sparing even a second's glance for others. Into his dry, barren daily life... a crazy(?) girl suddenly charged through his steel walls. It's Lim Jukyung. So what if he saw her bare face! Why is she kneeling, clinging to him, and making such a fuss just to keep her secret? 'Actually, she looks pretty cute even without makeup... Ugh, anyway!' Could this... possibly... be that "first love" everyone talks about?

Han Seojun

Male 18 years old Charming looks, a model-like physique. Solid shoulders and a toned body... and his expression is always fierce. In reality, he's a warm son who takes care of his sick mother and a sweet brother who adores his younger sister. He's just a little bit lacking in basic general knowledge. A year ago, his friend Seyeon, who first discovered his musical talent, passed away. That day... he also let go of his friendship with Suho. But now, Lee Suho is smiling. 'Wait... do you actually like Lim Jukyung?' At first, he wondered why he was even hanging around her. But then curiosity turned into interest... teasing her became fun, and he started missing her when she wasn't around... Isn't that how falling in love works? The problem is, why does it have to be the girl Lee Suho likes!

Kang Sujin

Female 18 years old No need for makeup, filters, or Photoshop... She is the original bare-faced goddess of Saebom High. Always confident, bold, and a total girl crush, she excels in her studies too. On top of that, she comes from a wealthy family. Being the only female friend of the iron-walled Lee Suho is something everyone acknowledges. Sujin seems perfect in every way, but she actually struggles under the pressure of her oppressive family environment. She became friends with the simple and bright Sua, and naturally grew close to the transfer student Jukyung as well.

Choi Sua

Female 18 years old Insane sociability. A chatterbox who talks so much she's nicknamed "Choi Suda." Possesses tireless energy and out-of-this-world hype. A typical, lively Korean high school girl who believes stress is best relieved at a coin karaoke room. She considers being a fangirl her hobby. Her current motto at 18 is "Pretty girl next to a pretty girl." She was Sujin's best friend, but as soon as she saw the transfer student Jukyung, she claimed her. She snatched her up before any other friends could, becoming besties through her unique friendliness, and thus became the "pretty girl next to two pretty girls."

Yoo Taehoon

Male 18 years old An average guy whose grades, looks, and height all hover right around the median. However, he's a passionate man who refuses to love averagely. The one who loves more loses? Nope! He's a pure-hearted high schooler who believes the one who loves more wins. Knowing Sua's personality—coolly dating and coolly breaking up—he always gives in to her because he knows he'd be dumped instantly if he picked a fight. Fitting his motto that no tree won't fall after ten chops, he makes no exceptions for men either. He's currently on his tenth—no, eleventh—swing at Suho to be friends. Lee Suho! Just like Sua did, you'll soon find yourself falling for my charms too.

Ahn Hyungyu

Male 18 years old His dream is to have a girlfriend, but he's Saebom High's representative "solo since birth" who has never dated. He's friends with Yoo Taehoon and Lee Suho. Though it's unclear if Lee Suho actually considers him a friend...

Kim Chorong

Male 18 years old Seojun's simple-minded but loyal friend. Contrary to his pretty name (meaning "sparkling"), he has a rough appearance and a large build, but he's surprisingly soft-hearted.

Park Saemi

Female 18 years old Lee Sungyong's ex-girlfriend. A typical bully from Yongpa High who enjoys picking on the weak and sucking up to the strong. She was the bully who led the ostracization of Lim Jukyung back at Yongpa High. Even after Jukyung transfers to Saebom High, she occasionally runs into Jukyung when she's bare-faced and torments her along with her crew.