I Got Sent to Another World, but It’s in the Mountains. In Reaction, I Choose Comfort Over Strength. is a Manga/Manhwa/Manhua in english language, Shounen series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

A protagonist enjoyed his Isekai life by stubbornly doing everything at his own pace. Abundantly surrounded by misanthropes, he tried to redo his life and have an amicable personality…Let’s leave it at that. When starting over with life, returning to one’s mental age was not guaranteed. Probably.