You've read Gamer stories. You've read overpowered SI stories, this is both. Prepare for Insanity and bullshit powerlevels. Gamer Oc, eventually OP Oc. Slight Au and refrences to other games that may or may not be known. Main characters will consist mostly of the Gamer, the Gremory group and Sitri group

When Ash and Dust told the Black Lambs all being across dimensions would watch the fall of Astaroth, it was a hyperbole. That doesn't mean what they have done won't attract...attention. Seven years later, Seha fell into the space between dimensions. He woke up in another world. (M because this is DxD)