Traveling Across the World Begins with the Four-Wheel Drive Brothers

Multiple world travel + multiple heroines. The following introductory content: A terminally ill boy dies of disappointment in the real world. After death, the soul is pulled into a pure white world by a mysterious old man. The boy slowly became stronger in each world, and finally discovered that it was not that simple, and there were many secrets hidden behind it. Traveling through the world: Brothers of Four Drivers - Demon King - Battle King EX - Naruto... (This is my first time for a newbie to write, and I have only read books before. Mainly because I can't find what I want to read, so I might as well write it myself. Because I like multiple female protagonists, I will write about this aspect, but who I will accept will be based on the characters I have liked before, such as Four Wheel Brothers Hijikata Rei, who I plan to transform into a girl, and Battle King EX Monster are my favorite characters in the past. I won't accept them all. Pretty boys and pretty girls can also comment on their favorite female characters. I will consider it as appropriate. There may be less emotional scenes, so I will try my best to write them well.) Not only animation, but also the world of novels, film and television