User blog comment:Mnzombie/Issei's Peerage/@comment-98.77.232.214-20120620082517/@comment-101.166.128.94-20120620121840

Even if he has to wait until he is promoted into a high-class devil, it doesnt mean he can't collecting his own peerage before he is promoted. Like the Vali team, he can gather his own Issei team before hs is promoted. The 4th arc is called "The Legend of Oppai Dragon and his Lively Companions". The auther already hinted out that he is going to gather his own team already.