Another one is how the world is all him completing the task of satisfying multiple souls (riding multiple boats?). Although it was explained and reasonable, it makes the second quasi-world feels like a repetition of the first quasi-world. Despite this, after you read it until the middle- Chapter 120+ I guess, it actually starts becoming more and more interesting. The story changed from only pleasing the souls and achieving the side tasks to actually doing different tasks as his main and pleasing the souls as just a part of it.

I feel like if the ML's soul wasn't pulled out forcefully from the other worlds, we would have seen more of the quasi-worlds the ML made, but it affects the ML's health so it's actually a good thing for him to retrieve the souls as soon as possible.

In the dream world, ML groomed MC when he was a desperate college student. The power imbalance of a professor and student doesn't sit right when ML convinces MC to live with him. It was supposed to be "romantic" since the awesome ML saved the poor MC when the world was out to get him, but ML was a full-fledged adult while MC was barely a young adult entering society. ML is also super possessive and creates games that force the MC to paddle ten boats of different versions of ML I was rooting for the MC to outsmart ML's bs most of the time since the ML was possessive to an unhealthy degree.