al_MM

then make him human in the first place . dxd riser is not human . there human villains in dxd that you could try to write about but you choose one of dxd three way war race that's know for being perverse overall.

he feels like a coward

Greek Gods usually give the blessing to those they considered they're favourite pet monkey. so to the rest of the Supernatural world it would like the main character is a pet monkey for Ares and a obedient war dog.

So Author does he save Olga or let her die a horrible death.

You could just give the main character the essence of human progenitor.

Ino formal dump

Stop the info dump

We don't need a info dump

Kama and Parvati FGO .

You did not watch the original Hellsing did you.