I recommend the light novel "Time Raiders" to you. When the male protagonist was reborn in the Marvel World and became a Nightmare Elf, he was in the Marvel World. He collected infinite gems to establish his power and collected divine fragments to become the savior. He had also collected monarch relics to destroy the decaying empire in Slaying Crimson Eye, and he had punched the Akatsuki organization and kicked the five ninja villages in Naruto, absorbing the power of the tail beasts. He relied on the power of the heavens to comprehend the mysteries of time and space, becoming the sole ruler of the multi-dimensional Marvel Universe. If you like this kind of manga collection plot, then this book is very worth reading. I hope you like my recommendation. Muah ~