Rant:
They say being ignorant is sin, and this guy is going to get in all kinds of mess because he's too dumb to hide anything. Though I haven't read ahead so maybe not? Well he's an MC so he'll prb be fine even if everyone else gets fucked around him like chapter 3.
I know they are goblins and whatnot, but these goblins are supposed to be born and have familys and females, so they aren't just spawned out of magic. Why are they not more careful but just living in some random place waiting to be killed, ever heard of town watch? Ever heard of running the fuck away? Ever heard of not lining up to be slaughtered? To completely wipe out a town when attacking from just one side like that, does that seem likely to work? Should be a bunch of them running away and surviving but seems like there isn't.
MC has a severe case of the "I know no evil, therefor I will not be prepared for evil and when evil happens I will stand slackjawed and do nothing" syndrome.
If MC helps them with their fish? Problem I'm gonna be so mad that I'll drop this, even after waiting a year. Especially so if he shows off his power when helping so all hell breaks loose. If he just waits without making waves he can learn the language and learn how to survive without plot armor needing to save him every few seconds.
Though he should have already tried to use his OP power on "people" and not just gone "guuuuuh they talk I not understand, can I eat fruit?" like a real braindead protag, yes I know he doesn't understand his power, but WHY THOUGH, he's a modern human right, he should know the scientific method of trying stuff to see how it works, damnit author.
Him being confused about things isn't a reason to be thoughtless because he's had tons of time in goblin town to think and chill out and a ton of time (prb days) on transport wagon to town to think, but he's still like a blank slate, deepest thought being "can I eat fruit?".
Modern human? More like caveman in otherworld, a weak to the point of being basically crippled caveman, with the emotional stability of a 4 year old, was going to say 5 year old but thats too stable.