To be honest the idea was good but the story looks like it was written by a 5-year-old... the main character looks really good after he gets his upgrades toward the end, secondary characters are not even worth mentioning.. especially his sister calling him Bro all the time like a '70s surfer
Stupid conversations, rushed story, and no wonder it was rushed because it got canceled so you'll read and realize that it ends with no clear ending as the last chapter ends right before the major climax, imagine squeezing about 100+ chapters into 1 just to end the manga with a pathetic chapter...
I wouldn't recommend it... there are way better zombie mangas out there and this one is one of the worst on the list.

If you want to read some good mangas with zombies and good art I recommend "Fort Of Apocalypse" and "Cradle Of Monsters"