Name: bikun bikun no mi (shift shift fruit)
Type: Paramecia
Capabilities: This fruit has the ability to "shift" things, somewhat like shifting a gear. This increases a basic physical attribute of the target, thereby. Examples include velocity, mass, shape, and etc. Only one basic change can occur at one time. Someone can shift the user into "neutral" by making him or her bored or unconscious. Shifts can be stacked on top of each other, if they are "positive" gears, like increasing velocity, amplifying its power. To do this, the user must make certain types of "contact". The first gear requires direct eye contact. Second, indirect touch. Third, direct touch. The fourth requires the user to contact the target with his/her blood. The fifth requires that the user ingest the blood of the target, which it will then "reverse" the user, and make him less of that corresponding attribute. "Reverse" gears cannot be stacked. They are one basic effect that is "negative". Positive effects are effects that increase, such as increased velocity or strength. Negative effects are effects that decrease, such as losing weight or losing endurance. A reverse gear can negate the effects of one "gear" another devil fruit user has, neutralizing that effect until the user of this fruit is bored or unconscious; furthermore, deactivating the gear or changing the gear will neutralize this fruit's effect. If another devil fruit user has a gear active, the user can increase the effects of that gear through positive shifts, reaching fifth gear when it would normally be fourth. Unlike other devil fruits, this devil fruit has a special ability caused by gears. One using this fruit can activate a gear called "bull dog", which takes away any and all devil fruit related abilities from hisself or herself and in exchange he or she has their non-devil fruit techniques double in power. The final gear is the "park" gear. This gear forcibly removes the devil fruit and its powers to a new host, be it a fruit or user. The parking gear, if used when in full health, will erase all memories from the point of obtaining the fruit's abilities. If used when injured, it will kill the user.
(This fruit is based on a car's gears obviously. This fruit will be used for a PC. I can assure you its abilities will not be abused or power played. For example, this fruit can't "reverse" life or death.)