Kaikyūinkin

The Kaikyūinkin (界吸引菌, World Attraction Bacteria) is a bacterium bred with organelles containing exceptionally potent capable of turning them into powerful, permanent magnets. By altering the frequency of chakra the bacteria feed on, the user is capable of altering their magnetic polarity, intensity and range at will. Because of their magnetic nature, the user is capable of rebounding them away from the Earth's magnetic field, allowing the user to control and position them without the use of wind, chakra and other mediums. When used in conjunction with, , or other magnetically attractive weapons, the user is capable of further weaponizing them for extreme use in combat.

A large group of bacteria planted on or within a target can also act as a biological, allowing the user's weapons and even other Kaikyūinkin to be attracted to them. The magnetic properties of infected targets can be changed at the will of the user.