Hello everyone, I forgot the name of this manwha, it was about a guy that lost the mobility of his legs because of an accident, later on he decided to killhimself(? and after dying he goes to a martial arts world (the same world but in the past), enter a demonic sect and becomes the red demon, he is then betrayed by a demonic sect sub-leader(? the blue demon and gets killed, after that he goes back to to his original timeline a couple of years before he loses his legs mobility. There were also other people like him too. I am sorry for my english and thanks in advance!