Responses
Good theory. My theory is maybe he didn't for the first couple loops but watching the 1 person you want to protect die and you know you will loop after you die. ML has definitely either killed himself or sought death to try and save the MC. It is like save scumming but "IRL" so his brain broke.
I wonder how many times black haired dude died. I don't think he lived the scenario only once because:
-He repeatedly said 'how many times do i have to repeat this' about phrases that you usually say once to a person.
-knows exactly what's going to happen every time (assuming that he took a different 'routes' and didn't follow every move he did in his previous lives).
-his mind is absolutely broken, poor guy. I don't think he can reach that level of apathy to others people death after only one turn.
-the scars(assuming that scars remain after death), shit ton of scars for one turn. Remember that you just need to be bitten once to become a zombie. (or maybe the scars aren't from zombies)
Theory:
I think that he doesn't immediately go back to the past if he become a zombie. Maybe after he gets his head cut off as a zombie, so this explains his neck scar. (or he got beheaded alive, which is wild)