User blog comment:Crimson Storm Mich/Future Units Preview v2/@comment-29936023-20161022024829

I feel like Aaron would be a perfect subject for Omni, since his brother, Kalon in his 7 star version, took away his powers and sealed them, and he realized his mistake and regrets it after meeting the Oracle Maiden. In Kalons Omni(A different Reality) he still took away Aarons power, but instead realized his full potentional as a demon of ishgria and waged war.

Aaron could've found the crystal shards holding his power and, instead of losing interesting in fighting his older brother, continued to battle him and grew stronger and stronger with every battle he fought and lost. Eventually he grows so strong that he was able to finally defeat his brother and leave ishgria, or he could've continued to lose his battles again Kalon and seeks to save the land his brother tries to incite war on.

Just a random idea :3