User blog comment:FrankieX98/The future members of the Issei's harem and peerage./@comment-2208155-20180911094929

400 in the case that Fallen angels(and maybe the angels) need him because they want more fallen angels, but these will be secondary wifes that only wanted him for that... without romantic feelings..

'''Currently, the Fallen Angels have the smallest population among the Three Factions. '''

https://highschooldxd.wikia.com/wiki/Fallen_Angel

'''THEY NEED HIM. The angels are cheaters because they created one room for have sex avoiding change to fallen angels:'''