Zombie's Leveling
As you know, it ends, with the male lead slashing blood out of innocent lives and falls deep into despair.
'No matter how many times I rewind it, this story still sounds stupidly brainless to me...' Akira frowns but keeps it hidden within his bangs. He really should have a haircut, he thought while blowing it out of his sight.
Thus, he doesn't know how powerful is the 5 group's future generations. The system only talks about the male lead's winning side during the fights with other powerful families. It doesn't specifically explain their whole existence.