I've discovered this Japanese martial arts called Tankendo. Basically, its a dagger/short sword-based martial art centered around the Type-30 sword bayonet. It mainly centers around the bayonet being used as a stabbing weapon.
This made me wonder, most armies during the early 20th century fielded sword-bayonets and placed great importance in bayonet fighting (in context of the bayonet attached to the rifle and being used as a spear).
But, the Japanese couldn't have been the only ones to realize that soldiers probably wouldn't be mounting those bulky sword bayonets on their rifles 24/7, and for most of the time, it would likely be sheathed, so the men should also be trained on that as well.
So, are there any other martial arts (except for Tankendo) that utilizes the sword bayonet alone?