User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-95.210.189.106-20180508153849/@comment-2601:8C:601:5692:190:4BA3:7BF4:570D-20180509231557

Every member of the Rookies Four have the potential to reach Maou-class. That's because they all are willing to train to get stronger, unlike most others in Devil society who rely too much on the innate power they were born with.