I read the whole series in a few hours, honestly, this manga isn't that bad. I would even vouch for it being better than most, plus the fact it isn't an Isekai, which is a huge bonus. The MC himself is full of good intentions, he may be naive yet this can be tolerated with his actions. He is slowly but surely discovering his inner strength and dedicating himself to the people. On the con side, there is a blaring issue with the art style. For some bizarre reason, several key characters are "lolis." Not in the context of literal immature people, but several individuals in the bodystyle of a "loli."
It was fine for the first bit, though every few chapters have some new characters popping up in this type.

I do find it offputting as there are several moments in the manga where I just couldn't take it seriously.
Apart from that, this is a fairly great series even if it's following the typical good-willed healing MC trope.