DxD : Conquer Multiverse

This is simply a dxd fanfic…OP MC, Harem is huge. If you don't like this, please don't read it. 1nd World : Highschool dxd . 2nd world : One Piece ( Done .) current world : Highschool dxd . I can't write, English is not my mother tongue. Please read this fanfic gently