Yeokbyeon! CheotsarangNew역변! 첫사랑; My First Love, Transformed!; Total Transformation! First Love; Reversal! First Love; Glow-Up! First Love

You still havent gotten over your first love? That was back in elementary school. Seo Woo-jin, an engineering nerd who had a major glow-up from his awkward childhood days, has been harboring an unrequited love for the same girl for ten years. Then one day, as if by some twist of fate, his first love suddenly appears right before his eyes! After ten years of unwavering devotion, the girl he could never forget has finally returned to his life.