DxD with True Longinus (Vol. 1)

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One day he opened his eyes and found that he had been reborn in the body of a small, recently born child, and in addition to everything else, he also got a sister. And the world, in which he is now forced to grow up again, turned out to be a place where besides people there are also a myriad of different creatures and species.

Gods, angels, fallen angels, demons, vampires, yokai, and even catgirls - nekomata.

Being an ordinary weak human, he saw only one way to avoid becoming an accidental victim of the strife of supernatural creatures - to gain his own power. This is the beginning of a man who refuses to accept his weakness and will do everything he can to climb to the top of the food chain of this new world.