it's not a bad manga, but it has so many problems. Mostly in pacing. I'd say it's 7/10. Typical story of father figure traveling with a "surprise" child.
I really enjoy it, but I find it somewhat crazy that humans go from nice little people to crazed killers in the blink of an eye at the sight of any kind of non-humans.
The comic zenyon (magazine publisher) website page for this manga "has" up to chapter 38, though for me it says publication finished? so is it over? or did the author change publishers? I can't seem to find any info on it online