User blog comment:SpookyBoogie27/Light Novel Spoilers/@comment-82.178.42.183-20140208042505/@comment-1359322-20140208043221

Probably no. It's not like the Phenex has faced the situation like the Astaroth faced. Also if Ajuka who is a satan can't restore the Astaroth, do you think Issei would have more chance than Ajuka.