Star Ginseng Store

The main character, Ji Suwon, is an ordinary teenager with no special characteristics other than being good at drawing. One day, while attending an academy, he fell in love for the first time when he saw Kim Harang, the female student sitting next to him. However, upon finding out she already had a boyfriend, Suwon fell into despair and swore to live an ordinary high school life. However, one day, while walking down the school hallway, he meets Seol Hyorim, the school's beauty, and falls in love once again...

(Source: Namu wiki, translated)