The "Will-Will Fruit" (Iru-Iru no Mi): A Paramecia-type Devil Fruit granting the user the ability to manipulate the willpower of others within a limited radius. This isn't a direct control, but rather an influence. The user can subtly nudge someone's decisions, making them more likely to act in a way that benefits the user. For example, they might subtly influence a guard to forget their post, or make a rival underestimate their abilities. The range is limited, roughly 10 meters, and the effect is temporary, lasting only a few minutes at a time. The stronger the target's willpower, the less effective the ability becomes. Against someone with exceptionally strong willpower, like Luffy, the effect would be negligible. However, against most average people, the influence is quite potent. The user can't force someone to do something against their fundamental moral compass; they can only subtly sway their existing inclinations. Overuse leads to intense headaches and temporary exhaustion. The user's own willpower is not enhanced, making them vulnerable to strong-willed opponents who can resist the influence and fight back directly. The fruit's power is further limited by the user's own mental state; stress or fatigue significantly weakens the ability. This makes it a powerful tool for subtle manipulation and tactical advantage, but not a force for overwhelming brute strength. It sits comfortably in the power range between Zoro and Luffy, offering strategic advantage rather than outright dominance.