I just found this manga randomly browsing on catalog. It is same as usual isekai, which starts really fast. No backstory, no truck-kun - just protagonist appears in a fat body of 2nd grade character of anime he recently watched. We do not know his age, job or actually anything from previous life.
Because of that or maybe some other stuff - story is hard to follow. Hard to understand motivation of characters. Also its difficult to connect to the plot same way. Story writer does not make much attention to details.
Also graphics is kinda good.
Overall - easy to read, hard to participate.