I noticed the author replied but it doesn't show up in the replies for some reason so I can't read the whole thing. Your protagonist may have a 5 year old body BUT NOT a 5 year old mind or soul. YOU said yourself that they are way more mature than their age

In addition his first use of his dream was to try to remove the memory of his quirk awakening from people's minds. A frankly good idea. but not only did you make him fail that, you then made him destroy the quirks of his friends to try and do a nerfed version of that WHICH ALSO FAILD TO DO ANYTHING of use. and in the last chapter why exactly does his quirk actually do what it's supposed to all of a sudden?

Your story started strong but you made several bad decisions. The concept of the quirk was cool and if you did a redo of it for some reason I would probably try reading it. But as it is I can't sit through this garbage and can't recommend it to anyone either

Also if he was mentally regressed to a 5 year old why are the OTHER 5 year olds acting significantly more mature than him. Especially as you made a point to point out how mature compared to the others he is supposed to be

Frankly I think your the drunk one

Let's start with your claim of him having a weird personality. Chapter 3 : A New Life. Inside, it is explained that MC's personality is affected by his age. To keep it simple, half his mind is that of a kid, the other half is that of an adult. On some subjects he acts like an adult, on others he acts like a kid.

Regarding the first dream, I already answered you in the chapter comment section, but I will do it here too. For Mc to use it's powers, he needs dream energy. Mc can only gather dream energy at night while people are sleeping. First dream failed because it did not have dream energy since he obviously did not have time to gather any. Because of that, he had to use Forsaken Dream to sacrifice his friends quirk, transforming their quirks into dream energy that he would be able to use to cast his first dream. The problem is, the first dream goal was to alter the memory of an entire prefecture, which consist of 7 million people. Even if he sacrificed his three friends quirks, altering the memory of more than 7 million people is a crazy thing, of course it would cost him a lot of dream energy, so he wasn't able to fully enact the dream and had to nerf it to reduce the cost of the dream.

you explained why he acts like a kid (because he is one) but not why the other kids which are normal kids act more mature at times. I find that odd still

I you understood my previous explanation, now you should understand that the reason his quirk worked in the last chapter, is simply because there was a time skip of one year, so he was able to absorb dream energy for one year, so of course now he can use it's quirk... Naruto needs chakra to use his jutsus, Natsu needs Mana, a soldier needs amo and a boxer needs stamina, it's a simple concept.

Now his friends, I don't understand why you consider them as simple five years old. They litteraly spent 7 years training in the Dream World with powerful beings, they are far from being normal. Plus, it's not that the mc is less mature, it's just that he did not have the opportunity to shine yet! Don't mention the incident because I clearly explained that he was targeted by an enemy quirk that affected his emotions.

You've defended the why when it comes to his usage of his quirk well. However may I ask did the protagonist basically give themself a temporary and limited omniscience for info gathering or did he do so in another way?

Because if so then they could use the same dream for a lot of different things and it gives a good reason for why getting answers to a question he should have vague ideas about costs more than multi invisibility which he seemed to do easily

I missed that they also went to the dream world. That's on me. Also if everyone saw a big piller of light then I complex concede that point

You have explained the in story gripes I have. At this point my only complaint is dialogue and spelling/grammer so my review is now more like a 3

Nope, even if it's temporary, omniscience would require him to gather dream energy for a long long long long long long time... I mean, there is hardly something as op as that. If you want to explain how he got the info, you can look at it as if he looked at the records of the world in a way. Although it sounds grand, since it's only related to a specific event and a low number of people and since it happened not long ago, he was able to pull it off.

Well the quirk can be used for a lot of things, the only limiting factor of it all being the amount of dream energy he has in store. And regarding dream energy, as I said, the amount he gets depends on his area of absorbtion. In the anime, it is said that the more you use a quirk, the more powerful it becomes. For mc, the more dreams he makes, be it in the real world or in the dream world, his area of energy absorbtion will increase a tiny bit, so basically he can increase it by spamming dreams in the dream world since dreams in there are cost free.

Honestly I would give it a two, and I speak in all objectivity. I do a lot of grammar mistakes because my main concern is for the reader to understand the sense and make readable sentences (by sound at least lol), I'm trying to reduce the number of mistakes, but I don't have the energy to review every chapter each time, I usually correct the mistakes I maid when I read my own chapters. Other than that, there are a lot of things I need to work on, for example the story stelling, I need to stop the cringe things (I do it because I think it's funny hehe), and a lot of other things. It's my first novvel so I ain't trying to do something perfect, my plan is just to propose my ideas of how he is going to affect the world. I have a lot of work to do on the pace, the character development and who knows what lol. Anyway, thanks for the criticism and for presenting your doubts about the story. I think that there are a lot of people who didn't understand everything too, so I hope this will help them too.