The idea of the isekai is not bad actually slime MC, but the story just make a huge turn when you get deeper which might ignite some, however might twist some.
The story was praised to be impressive story, but in my opinion, it's not.
Character development is so bad, aside from physical appearance, there is not much development.
While there is a world building plot like other isekai anime. The sim building in this anime is not really enjoyable as it's not really get into detail.
The biggest mistake is author try to change from isekai light-heated comedy story to deep plot.
There is nothing like MC power up in the story after first few episodes. The story try to make villians look mysterious and strong but at the same time, not that powerful. MC is in the same boat, and it's really contradicting.