Geneiken

Geneiken is a term that can refer to several things, most notably a specific type of sword and a character from a popular manga and anime series. In the context of Japanese swords, "Geneiken" (literally "demon-slaying sword" or "evil-spirit sword") is a classification of sword, often associated with the Tōken (Japanese swords) specifically designed to combat or ward off supernatural entities or malevolent forces. These swords are frequently depicted in folklore and historical accounts as possessing special properties or being wielded by legendary figures.

More commonly, "Geneiken" is the name of a prominent character in the manga and anime series "Bleach." Geneiken is a Zanpakutō, the spiritual weapon of a Soul Reaper. In the series, Geneiken is the name of the sword wielded by the character Kuchiki Byakuya. As a Zanpakutō, Geneiken possesses a unique shikai and bankai form, each with distinct abilities and appearances that reflect the wielder's spiritual power and personality. The specific nature and capabilities of Geneiken within the "Bleach" narrative are central to Byakuya's combat prowess and character development.