The Outcast Is Too Good at Martial Arts is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Cha Mu-gyeol, the MMA fighter, succumbs by Chairman Jang’s temptation and ends up in a vegetative state during a heavyweight fight. Later on, Chairman Jang uses him for his own image makeover. In the end, he dies and possesses a high school student’s body who goes by the same name. This new body has a super-strong physique with an S-level durability and a status screen ability that can improve his fighting skills. This time around, he’s out for revenge against Chairman Jang and to achieve his dream of being the strongest.