User blog comment:FrankieX98/The future members of the Issei's harem and peerage./@comment-37165251-20181209183528/@comment-2208155-20181210080032

I was wrong about Erebus(vol 24):.

However, because of the actions of Tartarus and the others, it was possible that a primordial god would respond to the Sekiryuutei — the Oppai Dragon. Hades was also concerned about the primordial god who was responsible for sex and love — contact between Eros and Hyoudou Issei. But that was only a small impediment, and by counting in Balberith, victory could almost be guaranteed.

I confused him with  Eros..