Gu Hajun

_Height_: 186cm

The former No. 1 of West Gangbuk high, currently No. 3.

As a child, Ha-Jun wished he had been alone. His mother had raised him for a short period before running away, which left Ha-Jun as the sole target of his father's abuse. He learned how to block before he even knew how to multiply, and studied in order to survive.

In that setting, he taught himself boxing using a magazine in order to beat his dad, a goal he accomplished once he became a middle schooler, feeling no regret for it.