Tessen (鉄扇; Literally meaning "Southwestern") are folding fans with outer spokes that are made of iron plates which are designed to look normal and harmless. It is a item used by Hagoromo Gitsune which grows in size when she is battling one of her opponents. The fan can protect Hagoromo from any attack and cause increasing damage to her opponents. She can use her technique called "Nibi no Tessen".
- It was an item that Samurai takes them to places where swords or any other weapons where not allowed. There where also some swordsmanship schools that trained with their tessen as a weapon. It was mostly used to fending of darts or any other throwing weapons.