The Type 22 Survival Knife (also known as the WickedArms TA-14) is a mid-size knife with a 15cm blade made out of a solid piece of crystal-clear artificial diamond. This design of knife has been in use by the Star Army of Yamatai since its creation. The black no-slip rubberized handle is separated from the blade with a small hilt and the knife end has a heavy-duty lanyard string attached for putting around the wrist. The blade features a normal and a serrated section. The Type 22 was eventually replaced with the Star Army Survival Knife, Type 40.

Pictured below: Taisho Kessaku Irim wearing a Type 22 Survival Knife.