That guy might have been the one MC saw before his entire highschool went crazy, Idk but the flashback shows the same exact boy who we save with MC on the other side of the window. Maybe indicating ML could possibly be the same guy, perhaps made it alive, but became either half zombie or something else.
Because everyone calls his their secret weapon, like, he knows when the zombies will stay clear of an area, or where they will travel too next. Generally, it seems he can communicate with zombies but still have Awareness as a human. Perhaps that is why his eye is half red and blue.
OR IM JST OVERTHINKING, BUT YK
I didn’t mind the entire manga itself, probs cus I jst read for the fun of it, but for those wanting to read, y should allow yrself to explore different manga works, even if the reviews don’t like it. Half being cus they don’t like the bland personality or storyline, but if y read for fun like me, it ain’t horrible.
oops sorry, that was mines..