The Eisei Eisei no Mi (Eisei being Japanese for health / immortality) is a Paramecia Type Devil Fruit that grants the user the ability to control the immune system.
Strengths and Weakness Edit
The greatest strength of the Eisei Eisei no Mi is that it grants the user complete control of any immune system. It also grants immunity to all illnesses, as well as instant healing to wounds without scarring. The user can also kill instantly simply by touching an opponent as long as there is some sort of open wound, by shutting down the immune system.
The user, unless dealing with himself, in order to access the immune system of others, must access it through a wound. However, that wound could range in size from a simple needle puncture to a full sized scar.