Insanely Overpowered (Highschool DxD x OP!M!Reader)

You are insanely powerful. So powerful in fact you could take the great red and Ophis at their strongest at the same time. Let's see how a world inhabited by devils, angels, dragons and gods fare when you decide to kick back, relax and enjoy the shocked faces of everyone as you turn their world into your own personal playground.
Haven't watched DxD and will not watch it so OOC moments will be present and I'll make my own story line with some elements from the anime.