A blue ray is emitted when the sword is swung and turns red on contact with an opponent. Competitions and trial use of the special swords are held weekly in a building in Tokyo’s Akihabara ...

Sayer told Newsweek that the sword was an "elite object that marked its owner out as special." He said the ring on the sword suggested it may be a "gift from a king or an important lord." ...

Japanese sword making is a tradition that goes back centuries, and one that's carried on to this day. Each sword take dedication, skill and can take over 18 months to create. The resulting blades ...