I am going to explain several points that I would not like to touch on at this time.
Mc was a murderer since he was a child, well he started when he was 11 really, so practically his morals are distorted, but don't confuse it with brainwashing.
So he carried out many missions throughout his life and the lives he took were not few, any mission they gave him he accepted, you can imagine the number of people he killed, regardless of age or sex.
The world he lived in before he died may have had magic but it is a broken world, that's what I call worlds that don't have magic, people can have abilities, but without magic they can't use them, mc has a mental ability so it doesn't apply .
and practically with that ability because almost nothing affected him.
So don't expect them to change their character, in my case I won't make him change who he is, he can hide his coldness and indifference but he will always be a heartless killer.
Of course the relationships he will develop will be little by little, so that he gradually know love and can have some happiness.
Well that's all, I could say the MC's life in this auxiliary chapter but that would be spoiling everything.