Koi Koi no Mi

The Koi Koi no Mi is a Logia-Class Devil Fruit that allows the user to generate, manipulate, and become shadows. This grants the user an intangible form and allows him to generate endless amounts of shadow-based energy, transforming him into a Shadow Human.

Mauricio Kerrim is the current user of this Devil Fruit.

Strengths

 * Power fluctuates depending on the time of day, being strongest at Sunrise and Sunset when shadows are most prevalent.

Weaknesses

 * Power fluctuates depending on the time of day, being weakest at noon when the sun is at it's peak.
 * Light based attacks can cancel out and even overpower that of the Koi Koi no Mi.

Usage
As stated, the Koi Koi no Mi grants Kerrim the ability to generate, manipulate, and transform into the element of shadows. This makes it so Kerrim has total dominance over the element of shadows. Kerrim is capable of not only controlling and generating shadows, but has demonstrated the ability to grant shadows mass. By doing so, Kerrim is capable of attacking an individual with these shadows as if they weren't an intangible element. This allows him to emulate effects that a shadow usually wouldn't be capable of. The effect Kerrim uses the most in combat is using his shadows to shred and cut enemies. He can also decide to use these shadows to prevent an opponents movement or even blast them back with the blunt trauma he can grant these shadows.

A common trait among all Logia Devil Fruit is that the user is capable of making themself intangible by becoming their element. This grants Kerrim neigh invincibility since it's extremely difficult to land a shot on him while his body is in this intangible form. Furthermore, this intangible form grants Kerrim enhanced speed while using it as well as allowing him to slip into places he otherwise wouldn't be able to reach.

Techniques

 * Shadow Tempest: As a technique Kerrim developed to put his intangible form to greater use, as well as using this as a way to make himself less vulnerable in a close combat setting. Kerrim initiates this technique by entering his intangible state, making his body indistinguishable. He then begins to rotate the shadows his body is made of at high speeds. Kerrim, in this state of shredding shadows, charges forward at the opponent, appearing like a swirling funnel of dark winds. Directly before making impact, Kerrim grants his shadows a more tangible state, allowing him to shred, or at the very least, severely damage whatever he hits.
 * Binding Shadow: Usually preferring to keep a distance in a fight, Kerrim needs a way to keep any advancing enemies at bay. This is where this technique comes in play. In order to use this technique, Kerrim manipulates the shadow of or around that of whomever he wants to keep away. By manipulating the shadow, Kerrim can control the shadow and use it to entangle his opponent, keeping them away from him and giving himself time to think of his next course of action, even if for a moment.
 * Umbral Web: Much like it's parent technique, Umbral Web is used by Kerrim to keep any advancing threats at bay. Unlike Binding Shadow, which is used to bing a single target, Umbral Web is used to bind numerous individuals at the same time. Kerrim does this by manipulating numerous shadows, expanding them and linking them together when needed. The shadow then springs into action and wraps up all within it with shadow tendrils. The strength of this shadow is also much greater than that of it's parent technique, this due to Umbral Web's size being much larger in comparison to that of Binding Shadow.
 * Gale Force Shadow: As with a few of Kerrim's techniques, Gale Force Shadow is used to keep enemies away as well as discouraging getting into close range with him. Kerrim extends his hand forward at his target, although being for flare in most cases, proving this gesture isn't necessary for the usage of the technique. Kerrim then releases a powerful blast of shadows that blow anyone caught within it back a great distance.