User blog comment:DeathGodPrayer/Talk About What You Want!/@comment-98.26.119.147-20140114220805/@comment-1359322-20140115013125

@AstarothFan, That is impossible, the Astaroth Clan is placed under complete surveillance after Diodora's action, also after the events in Volume 12 where many Stray Devils or Devils from the New Government betrayed the Underworld, the Underworld became stricter with the regulations of the Devils.

As to what happen to the Astaroth Clan, Issei didn't put them into their current situation, the politicians of the new government did. Issei didn't even have a right to punish the Astaroth Clan nor is he interested too. It's those politicians that wants to make use of the Astaroth to set an example of what would happen if another clan betrays the Underworld.