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My First Love Hate

Eun-ha, who dreamed of becoming a teacher, finally became a shift student. However, she finds out that one of her classmates is Seung-min, who was Eun-ha's first love and childhood friend. However, Seung-min was an iljin (bully/delinquent) when they were in middle school and high school and he cut ties with her, but now he's approaching her little by little!! (Source: Naver Corporation, translated)