The Killer Points as seen on Ryohei
By removing his glasses, Koyo Aoba
's eyes receive an upgrade in which they can see the Killer Points
on his opponent. This is his visions true form. Once his no longer dons his glasses his vision perception of speed, depth and stillness
Koyo's eyes in Killer Point Vision
and greatly augmented, allowing him to home on Killer Points, whch are invisible to the invisible eyes, and attack them. These killer points are usually hard to hit due to them constantly moving around the body. Hitting these points will result in great pain to the foe, moreso than any normal attack could deal. Because of the enormous amount of information being sent from his eyes to the brain, he can only use this for a limited amount of time, because his brain starts to overload.