Kurusu

The Kurusu are a Hachitou clan with the ability to manipulate and command light.

Abilities
The Kurusu do not create light. The light is generated from light. To put it simply, if Kurusu clansmen and opponent are standing away from each other, the Kurusu could manipulate the light particles in the environment to attack their opponent basically as fast as light can move. That's what they can do. They don't create light, they manipulate light from light particles within the environment. By that, they can create knives, swords, and etc with light particles. Everything is in light, so they can manipulate the light. They can blend in with the light to reflect off of other light particles for light speed attacks.