as we all should know by now, this author is the kind who will not ever have the MC kill another human no matter what they do, proof of this is from just a couple chapters ago when he let psychotic child murderers go and even healed one of them, in the end, all he will do is beat them all up a bit, then heal them and they will have a talk about, then it will be all ok, because it was all a misunderstanding, them murdering children while laughing about it and making it a contest over who can kill the most malnourished children and injured elderly is ok, it's totaly forgivable, because it was all just one big misunderstanding.
its very typical japanese thing, laughing while comitting child mass murder is ok when its a misunderstanding, they will be so vewy sowwy about it, so it's ok and forgivable.