Deadlife 

Am I dead, or am I alive? After Seong-Hun gets bitten by a zombie, he soon realizes that he hasn’t completely turned into one. Yes, his movements are slow, his urge to bite humans is strong, and his looks are completely different. But he remembers. He remembers the scent of his crush, he remembers how to read, and he remembers that he should protect his friends. Unfortunately, the other intelligent zombies seem to disagree with the last bit... (Source: WEBTOONS) Note: Chapter count includes 3 extra chapters