All of the phantom thieves had troubled pasts, yet, but they all had someone to give them purpose, and their problems mostly started recently. Ryuji had a mother ho cared for him, and had the track team to be with before he snapped (no pun intended) Ann had Shiho, and her problems started with a high school teacher. This continuse ith all of them. Akechi had nobody to rely on, all through life. By the time he recieved his powers, he had gone past the point of being saved. Maybe if his childhood had been even slightly better, or if the Phantom Thieves could have helped him earlier, maybe he could have at least changed a little, even if redeeming him wasn't possible.