This story has high peaks but is often bland at times. It going to especially enjoyable if you haven't read My senior brother is too steady (protagonist and the closest character to Mc are very similar). There is overarching mystery surrounding the world that is slowly getting revealed.

Every character has an intelligence of a 10 years old

Normal cliche story.

Chapters are separated into two parts from around chapter 85 in the Raws, only first part is translated. Around ch 140 - the story has gotten really boring

3.5 - very repetitive, heavy plot armor

I don't think I've seen such stupid MC in a long time. He kills someone with big background, then takes their storage bags without a care in the world. In the end, the backer of the person he kills starts to chase him. It's fine if it happened once due to lack of common sense. But this situation repeats, even when he know the higher realm backer is nearby. The story make character stupid to progress the plot.