The reason my rating is so low is because of his powers. His power is to basically bring a world with its people to the marvel dimension. Thought the idea is good, it is too strong without any balance or a way to counter it, meaning as soon as he reaches enough "points" he becomes unbeatable depending on what world he brings first.
The way to fix this would be to instead just bring the powers of these characters for a limited time. For example, instead of bringing the whole one-punch man world, some powers of Saitama will be brought to the mc for a limited time. And I mean just his powers, dont transform into saitama, dont bring his world to this universe. Nothing like that. The reason why I say this is because "spoiler alert" when you brought the naruto world into this fanfic, you basically became way more powerful than any character on earth. Naruto or sasuke alone could destroy cities very easily.
If this was your plan all along, to have an unbeatable mc in the first 5 chapters, you did well. But I can find this kind of idea in other places as well. Meaning its very mediocre.
