Is that you?! (Happy ending, the fox is just a little bit ♥)

Back then, middle school student Yul-i was a popular bully at Tani Middle School, and Yoon-gi (Suga) was a crybaby and incredibly weak. The two had been close friends since childhood. One day, when Yoon-gi was bullied, Yul-i got angry and started training him. And so...after their sixth grade year, Yoon-gi transferred schools. And three years later...they're now high school students. But...their personalities are complete opposites?!?!!? Yul-i has become kind, and Yoon-gi is a bully?!??! Watch t