The Tenka-Goken (天下五剣, "Five [Greatest] Swords under Heaven") are a group of five Japanese swords.[1] Three are National Treasures of Japan, one an Imperial Property, and one a holy relic of Nichiren Buddhism. Among the five, some regard Dōjigiri as "the yokozuna of all Japanese swords" along with Ōkanehira (ja:大包平).[2]