Kantan na Monitor desu - Attraction 07: Memory Game

God plucked one of his creations from his first Earth and gave him a second chance in another one of his Earths...surprise it is in DxD! Now reincarnated as a perverted side character how will our poor protagonist handle his new identity? Well he probably wont make the choices you will want him to, that's for sure!

Natsuki arrived in the world of Naruto. He chose to let go of the savior complex, respect the fate of the chosen one, and live only for himself.Naruto: Sasuke!Sasuke: Naruto!Sakura: Stop it, you two! Don’t fight anymore!The rain poured relentlessly. Off to the side, Natsuki snacked on sunflower seeds, casually handing some over to his girlfriend, Tenten.Pain: He deflected my Shinra Tensei!Obito: I just wanted to create a world with Rin... but that bastard Natsuki said “If there’s Rin, there has to be Kakashi,” and made me watch Kakashi unleash Kirin. Be born already!Six Paths Madara: I acknowledge Natsuki as the strongest!Black Zetsu: Natsuki, you bastard! Get your foot off my mother’s head!Natsuki: Just Eighth Gate, Hiraishin, and Sage Mode—and I’m already the strongest in the shinobi world? Really?

Transmigrated into a world of swords and sorcery, Aaron awakens in the body of a lowly knight apprentice, an outcast born of a slave mother and ignored by his noble father, Baron Alfred. In a realm where steam has yet to meet steel, Aaron carries the knowledge of a more advanced world and a mysterious Map System that reveals everything around him, and rewards him with strength for every enemy he defeats.But Aaron isn’t content with swinging swords. As he carves out his own territory and introduces inventions that shake the foundations of this primitive land, he discovers whispers of a distant continent ruled by wizards. The knight’s path no longer calls to him. Magic, mystery, and power beyond imagination await.Will Aaron remain a forgotten noble, or rise to become a legend in a world that never saw him coming?

In a world where martial artists reign supreme, strength is everything. Unfortunately, that logic doesn't apply to a certain Florida Man.

Refined in the nuclear fallout wasteland, Leo was the strongest mutant alive. He carried an alien artifact, allowing him to exchange his lifespan for modern items. After 50,000 years of solitary life in a humanless world, he collected enough lifespan to transmigrate to another habitable world.

Leo was later thrown into a mysterious planet. He soon discovered that his body produced radiation, and it mutated the surrounding plants and grasses. Worrying that he might ruin the beautiful planet, he chose to live in seclusion.

Unfortunately, the local population soon discovered his existence, and a misunderstanding ensued.