Ōken

A sword to be wielded by the leader of many, hence it's name. Naturally imbued with electrical energy, the sword amplifies the neural synapses of the wielder by electrically stimulating the nervous system as long as it's being held, allowing for faster movements, thinking and reaction time, similar to the Raiton no Yoroi but on a lesser scale. However, this is only a tertiary feature.

Ōken's primary ability revolves around light. The sword can release massive bursts of energy as blinding lights when used, lights bright enough to damage or even destroy retina with enough exposure. This light can be directed and focused as a beam capable of incinerating whatever it's pointed at like a magnifying glass. Bursts of light can be released just before the sword is swung to distract, disorient and confuse targets. The light can also be focused directly onto the edge of the blade, so when it cuts it has a burning edge to it, allowing metals and other normally durable substances to be cut like butter.

The wielder can be affected by their own light, but since they are the ones creating and shaping the light energy, they can keep it from hitting their own eyes. The color of the light is always white, and cannot be changed. When in it's sheathe, the scabbard will glow slightly, a feature only noticeable in the dark.