This one is yet another iteration of the zombie apocalypse + evolution of zombies and humans, add the MC having a system and it's classic and pure manhua crap. It's almost the same as "King of apocalypse" or "The last human" or "Return survival" or "Apocalyptic Super System". All the same crap with minor variations, I'd recommend "Return Survival" or "Dreamside" or "The First Hunter" or "Rebirth 69 michi" over this one thou.
Back to this one, the story is crap, let alone it being completely unoriginal (so if you read any of the above you can picture what will happen ahead of time every time), it's also riddled with incoherent and inconsistent things all the time. For the characters, the MC is... meh, he has little personality other than "save my sister" since he abandoned his first life and lived with regret, there is little else to him so far, acts like an idiot half of the time, he's a veteran of 20 years and acts like a newbie and he gets glowing eyes ala Solo player from day one of the whole thing when he's at his weakest, also, like the aforementioned, he grows 20cm and gets an athlete's body after a sleep. As for other chars, his sis is a bird in a gilded cage, I'm expecting her to be OP later and being able to walk, but so far, she acts like a dumb kid, in big part justified since her brother doesn't explain anything and keeps her locked up. Other chars... no comment since there is none at the point I dropped it (ch12), save a super dog that was the last straw.
Pace is as you would expect, constant insipid action. Art is ok, on the good side for manhua, decent compared to good manhwa. Dialogues are base and rather badly written.
Overall, it's a rather bad and bland zombie story. For those who like and want more of the theme and have already read the other better options out there.