Summary: This is a different kind of crossover. Instead of one universe going to the other, their lives have merely been changed to fit this one. So everyone is familiar with the DXD elements like peerages, devil kings, etc. However, in this Percy is the son of Tartarus, making him the son of Hell itself. In this, he has his own peerage, consisting of a few familiar characters who have been rewritten to fit into DXD, plus some others. Percy's abilities are different and personality is also slightly darker.

For peerage:
Queen: Annabeth Chase
Rooks: Hazel Levesque, Gunilla
Bishops: Piper McLean, Sadie Kane
Knights: Thalia Grace, Reyna
Pawns: Raynare (reincarnated), Medusa, Zoe Nightshade, Bianca Di Angelo, (4 pieces left)

Story is yet to come, but if there are other characters, let me know. I'll get to it after some other stories and also have a break
Those that will be harem girl: Irina, Ravel, Serafall, Sona