Hou Hou no Mi

Introduction
The Hou Hou no Mi is a paramecia type devil fruit that allows the user to follow their target anywhere, thus becoming a pursuit human.

Appearance
the Hou Hou no Mi is colored blue and gold, and has a grape like formation, with a long stalk that splits in two.

Usage
The power of the Hou Hou no Mi requires the user to have a chosen target who they can see and know the rough location of. The user can "remember" one target for each of their eyes at any one time, but can only use their abilities against one at once, for obvious reasons.

Once a target is chosen, they can at any time move towards this person, irespective of distance, direction, or anything in the way. In the process, the user can take on a shadowy, vaporous form that passes through solid objects with ease. Upon reaching the target, they effectively merge into their shadow, and can remain there irespective of the movements of the target. Notably, in their intangible shadow state the user can still interact with their target as though solid, and vice versa, even if they are intangible to everything else.

Strengths
This fruit is exceptionally useful for assassins, as a chosen victim has very few options for evading or delaying the user. Hiding is impossible, walls and doors cannot stop them, and bodyguards will usually be incapable of attacking the user or doing anything to aid the targeted victim.

Weaknesses
The main weakness of this fruit is it's predictability. When pursuing a target, the user cannot interact with the world at all beyond moving towards their chosen victim in a straight line, with very little deviation. A target that is aware of how the fruit works can exploit this by luring the user into dangerous situations. As the user can only pursue a target, they may be cornered without any method of retreating if their attack fails, or even in the event of success. The user suffers from standard Devil Fruit weaknesses, and this can be exploited as a defence. While they appear able to pass through at least some bodies of water in the pursuit of a target, they will be slowed and weakened, and larger bodies like the sea or lakes are entirely impassable. Seastone, similarly, is solid to the user of the fruit, and acts as a barrier to their pursuit. Maneuvering around it will most likely force them to become solid again, leaving them open to interception. Needless to say, Haki users are able to strike the intangible form, and worse the reverse is generally not the case, leaving the user vulnerable.