Responses
So I'm a Spider, So What? (Kumo desu ga, nani ka?) has a similar feel of a classroom of Japanese students get sent to a fantasy world and scattered across it, and the MC is a spider who is reborn in the most dangerous dungeon of that world. As of yet, no kingdom building, but definitely strong to weak and lots of fun!
This is so good that i kept coming back to re-read it again after reading the novel. Btw, are there any recommendations similar to this manga?