How Does 'Dxd Crossover I Have A Normal System' Blend Multiple Universes?

A new world with nearly unlimited possibilities. A system, classes, magic, skills and monsters. Sounds exciting? But for Jin it didn't go quite as he expected nor was there a princess or a Goddess to welcome him to this new world, his only hope was the system he received. Left alone in the darkness, How will he survive when he wasn't human in the first place?

After transmigrating into the apocalypse, he acquired a Super Fusion System.Two Level 1 Zombies can be combined into a single Level 2 Zombie, the combined zombie would also be completely loyal.The higher the zombie’s level, the better it looked.The zombies also possessed unique skills and techniques. Some are heaven shattering and groundbreaking, with the ability to take the life of any adversary.In fact, the zombies will even continue to spawn new zombies every day.

Evy was a simple-minded girl. If there's work she's there. Evy is a known workaholic. She works day and night, dedicating each of her waking hours to her jobs and making sure that she reaches the deadline. On the day of her birthday, her body gave up and she died alone from exhaustion. Upon receiving the chance of a new life, she was reincarnated as the daughter of the Duke of Polvaros and acquired the prose of living a comfortable life ahead of her. Only she doesn't want that. She wants to work. Even if it's being a maid, a hired killer, or an adventurer. She will do it. The only thing wrong with Evy is that she has no concept of reincarnation or being isekaid. In her head, she was kidnapped to a faraway land… stranded in a place far away from Japan. So she has to learn things as she goes with as little knowledge as anyone else. Having no sense of ever knowing that she was living in fantasy nor knowing the destruction that lies ahead in the future. Evy will do her best to live the life she wanted and surprise a couple of people on the way. Unbeknownst to her, all her actions will make a ripple. Whether they be for the better or worse.... Evy has no clue.

A boy was transmigrated from earth to another world. he wake up on the body of a youngster from the Arch Duke family. Currently, he was treated as thrash and was sent to govern a desolate area between borders of two kingdoms. Follow the main character dominate the Continent using the people of his domain and the system that gifted him the power to trample everything that gets on his way.

Man dies. His last act in the previous life generates him an absurd amount of karma. He meets a god, and it reborns him in a crossworld of Larry Potter and DxD. He gets a gift, one that can only be fully explored with the knowledge that he learned in his previous profession in the previous world. The keeping of knowledge is also a gift. And with that, his karma is spent. Thrown in the world with a 'good luck' and a slap in the back, he fights to survive until the start of canons. The time until that, 1000 years. Yeah… Now read about some of his adventures in this crossed over world, beginning already in HP canon. English is not my main language, so you will find some strange stuff, like the mix of North American and the Queen’s English. Disclaimer: All characters that you recognize from the franchise of Larry Potter and DxD are propriety of its respective creators and I only wish that they were mine. But they are not. I only own the MC, the OCs, and the ideas that generated the non canon plot.

Al, was thrown into another world for no apparent reason. A new world filled with magical things. However, this wasn't the first time he had been reincarnated. He thought he was just an ordinary youth, but it turned out that his identity was so extraordinary in his first reincarnation. There were his harems still waiting for his arrival. Will he meet them soon and what will happen?