Genra's tokkosho

Tokkosho is a weapon that first appeared in Dead or Alive 3. It is a double-ended sword with blades made out of light engery; the handle appears to be made out of metal. As the blades are engery, they can be made into various lengths, and well as be summoned and dispached by the weilder. However, it can still make solid blows like a regular sword.

Tokkosho once belonged to the shinobi Genra, after he had been turned into a super-human weapon by the Dead or Alive Tournament Executive Committee. Genra used in battle against Hayate and his foster daughter Ayane, in which he was killed. Afterwards, the sword was passed on to Ayane, as she was his next-of-kin. Ayane has yet to be seen using Tokkosho in battle.

In Popular Culture
In the fanmade CG movie series Dead Fantasy, Ayane uses Tokkosho as her primary weapon. She handles the sword simular to Genra, but at a much faster pace.