From Easy Going Scans:

Leesu came from a poor family but he didn't mind at all not having any money or status. Being the school's strongest fighter made him feel as if he was on top of the world in his eyes. But alas, a car accident made him lose what was most precious to him; His ability to fight! Craving for his past glory days he turns to fencing with the hope to regain what he once had?


Original webcomic: http://cartoon.media.daum.net/webtoon/view/attaque