I am really having trouble remembering what was the story about. It was about a guy who died and got isekai'd, he got reincarnated as a shitty creature that's lowest of the lowest, something like carrying bricks all day? Or shitting bricks ? They're shaped like yellow chibis. His other fellow creatures were mindless and just do what they all do day to day. I just remember it started off miserable. Then later he finally leveled up and he passed out. His soul somehow got migrated to a mad scientist's frankenstein. The scientist wasn't nice and made some other grotesque creatures too. And later he's able to talk again. That's where my memory cut off. I couldn't even remember what was it about.