To reiterate what I just said, you have finally perished from the real world, but instead of your life ending, you have been given a chance to start anew. For some reason, the Gods of Manga and Anime have decided to grant you the chance to live out your fantasy in an alternate realm only a few know about.
Inspiration for this story will be drawn from quite a few Shonen series; animated, drawn, and written. I will not list down each and every one of them since such a task would be too tedious and would just produce a large wall of text. As much as possible, I shall stray away from characters considered to be Canon as well.
If you have any more questions, feel free to ask. However, if it pertains to certain issues regarding overlapping worlds or the current status of the world itself, I shall not answer such inquiries. For the former, we will solve such issues when they present themselves to us in the role play. As for the latter, these things will be revealed throughout the story. I prefer this method to fortify the idea that you being brought to a world you know nothing about. Well, only initially of course. Eventually, you will realize that where you are now, is simply a smorgasbord of the shows, novels, and comics you are quite fond of.