Sanran Sanran no Mi/Santōka

Santōka
Santōka (酸透過, Acid Permeation) is a powerful technique created by Tosen, knowing that anything that his body's cells produce is considered a part of his body, Tosen found a new way of using his devil fruit's ability.

Using his mastery over Life Return Tosen would produce high amounts of stomach acid, he would then proceed to release that acid from his body and manipulate it, to attack oppponents with it. because it's a highly corrosive, strong mineral acid, this technique is indeed very dangerous and effective, it should also be noted that Tosen has control of his stomach acid's moleculs, meaning he can control it so it wouldn't react with his body, to prevent getting harmed by the acid himself.

After a while Tosen found an even better and more effective way of using this ability, it requires for Tosen to act upon a cell's DNA or some molecule's structure and completely alter it as to produce foreign chemicals using both his devil fruit's ability and Life Return. In this case Tosen would have his cells produce poisons and toxins, and then he would manipulate it, release it out from his body, and attack opponents with it.

These two abilities can be used in many ways, Tosen can form the acid and poison as bubbles, he can shoot them as bullets at high speed, or even give them certain forms such as snakes or dragons.