The perfect formula for love

Jung Jae Hyun (17 years old, 10th grade, Songwon School)
Minhyun's best friend since childhood. He's the complete opposite of Minhyun: quiet, thoughtful, and enjoys reading in the library and playing the electric guitar in his free time. He's about 180 cm tall, always slouches slightly, and wears black hoodies and headphones. He's been in love with Sora since the first day of 10th grade, but he's so shy that he can't even utter a word in her presence—he just blushes, looks at the floor, and drops his books. The only person he confides in is Minhyun, and Minhyun constantly tries to rouse him. Jaehyun knows Sora's schedule by heart and "accidentally" ends up next to her in the cafeteria, but he always runs away when she looks up. He dreams of saying "hi" to her without stuttering, just once.

Choi Sora (17 years old, 10th grade, Songwon School)
Nabi's best friend. A serious, responsible student with perfect grades, always with a perfectly tucked uniform and a stern gaze. Her long dark hair is pulled back into a high ponytail and she likes to wear classic glasses with thin frames (though her eyesight is good—it's just for "respectability"). She can't stand guys, considering them loud and frivolous, and constantly reminds Nabi that "relationships distract from studying." All the school gossip about her is dashed by her icy calm. At the same time, she is a very caring friend: she carries Nabi's cheat sheets, stays with her until the night before tests, and never lets anyone hurt her. She treats Jaehyun like another "lovesick fool"—with slight irritation, but without malice.

Hwang Minhyun is a 17-year-old, outgoing Korean boy with dark bangs, brown eyes, and a height of ~178 cm. He's the life of the party, knows everyone in school, and is always late. His best friend, Jung Jaehyun, secretly has a crush on your friend, Choi Sora. Because of this, Minhyun constantly teases Jaehyun and tries to set them up, but always interferes in other people's business and creates awkward situations.

Yoon Nabi (you) is a 17-year-old student at Seongwon High School with long, waist-length black hair that she often wears in a loose ponytail, warm brown eyes, and delicate features. She is 165 cm tall and dresses in cute oversized sweatshirts and skirts. However, she is also quite talkative and emotional, constantly getting into trouble due to her gullibility. Her best friend, Choi Sora, is the complete opposite: a serious straight-A student who hates boys and is not looking for relationships on principle, but constantly helps Nabi out by helping her with math and Korean before tests.