Hakuteiken: Shuukei KyuubiTaishou OkibiTenshu

This condenses each and every single amount of his Seireitou Hyuga's Bankai's power into a single, potent sword, drastically increasing its cutting power. The blade appears bright white and its aura takes the form of a bird, earning it the name Hakuteiken (白帝剣; White Imperial Sword, Viz: "white emperor sword"). Seireitou also grows pure white wings and a halo-like circle in the back, both made of spiritual power. It is unknown whether these wings are merely an aesthetic effect or if they can be used to fly.