Multiversal Traveler - Rayzen

Just an attempt to write a trip in the Multiverse. Rayzen will transmigrate with the ability to travel the multiverse. Just trying something, so probably don't expect anything good. Just wanting to divert my brain from deep depression. So don't mind the story. Reincarnation is really weird to write, so I'm going to transmigrate. It's easier, my mc would come as I want, and I create what I need where I need it. Guys, I found I'm a denial when explaining things, so don't worry too much, I'll try to give an outline and your imagination will do the rest. Just to make it clear, my ROB is Grandpa Universe, a MC from a fic that I loved to read, he helped me a lot and I wanted to be able to have him as my ROB. If the author MisterImmortal has any problem with me using it, I will change it without a problem. But thanks in advance. Translated by Google, my English is non-existent. All comments are welcome, as long as you're not a brainless asshole who doesn't know how to be anything but a human nuisance.