Gakitou

is the cursed sword of Ichiraya Ryu. Created by Matsushima Zaia, Gakitou is a rusted katana with a jagged hilt and a handle covered in bloodied rags. The blade of Gakitou secretes saliva, which assists in its digestion of creatures, that coats the entire blade. Gakitou is capable of devouring any living creature by using the skin of their palms to exsanguinate them. If any creature is cut with Gakitou, the saliva secreted from the blade will begin to break down the top layer of skin if possible and continue to eat away at the muscle.

Not only does Gakitou devour its victims blood and flesh, but it also absorbs the very Tao that exists in living and non-living creatures, even being near the blade is enough to siphon other's Tao into it. Any and all blood, flesh, and Tao are all absorbed by Gakitou and transferred to the Wielder. However, this stored Tao is not mitigated or lost in any fashion, but continues to accumulate into the blade and the Wielder. The Tao stored within either the blade or the Wielder can be unleashed using various forms of Taojutsu.