User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-121.121.95.140-20180405034821/@comment-1359322-20180405110947

Vali hasn't even reached half of his life span. If Rias and the others who are of similar age gap as him is still growing what makes you say Vali reach his peak? Did the author say Vali is at his peak? Or are you smarter and know better than the author?

Besides who's to say power-up is the only way to get stronger? So because Kiba, Rias, Akeno, Sairaorg etc don't have any more power-ups that means they've reached their peak they can't get stronger now? Improving their skills, Demonic Powers, Stamina, control etc mean nothing cause they don't have anymore power-ups?

Your currently taking power-ups and treating it as peak and no power-ups mean unable to growth or improve anymore which is plain dumb.