A young man dies while saving a young girl from drowning.
That one act grants him an unbelievable opportunity. A chance at a second life.
Reincarnated into the world of Highschool DxD follow our hero's epic new life as he makes a harem of beautiful girls and tries to survive in a world where tits lead to world shattering power-ups.
Elements of the Fate series and other anime will be present. But this is not a crossover, this world will strictly be DxD.