Live and die by your fists!
High school student Park Ki-Hyun is more confident in his fighting skills than anyone else. He assumed he’d naturally become the center of attention at his new school after transferring—
“Huh? Knocking someone out in one hit was my specialty, wasn’t it…?”
The result? Just one match! Facing an overwhelming opponent, Ki-Hyun’s pride is shattered, and driven by a single-minded determination to win, he eventually steps onto the mat— Hey, let’s have a match!!(Source: Naver, translated)
— Description from AniList community (anilist.co).