In 'luffy vs kaido fanfiction', Luffy's growth and new abilities are often explored. He might develop new forms of his Gear powers to face Kaido. Kaido, being extremely powerful, forces Luffy to push his limits. Fanfictions may also focus on the intense battle scenes, with detailed descriptions of their attacks and counter - attacks.
Another plot twist might be that Luffy actually loses the first round of the fight but then finds an inner strength or a new power - up from an unexpected source, like a memory of Roger or a new Devil Fruit ability that he unlocks in a moment of desperation.
Yes, there might be. The world of fanfiction is vast, and with the popularity of both Naruto and Kaido from different fictional universes, it's not unlikely that someone has created a crossover fanfiction where Naruto has some sort of connection to Kaido. You can search on popular fanfiction websites to find out.
A gear was a type of mechanical component. It had a tooth shape and could continuously mesh to transmit motion and power. Gears could be divided into different types according to the tooth shape, the shape of the gear, the shape of the tooth line, the surface of the gear teeth, and the manufacturing method. Common types of gears include cylindrical gears, conical gears, oblique gears, racks, and worms and wormwheels. Gears had a wide range of applications and could be used in a variety of mechanical equipment, such as mechanical watches, electric fans, and blenders. The design specifications and material selection of gears were determined according to the specific application requirements. The parameters of the gear included module, pressure angle, tooth height, tooth thickness, gear diameter, center distance, tooth backlash, etc. The development of gears was very mature. Modern gear technology could achieve very small modules and large diameter, and the transmission power and speed had a wide range. In short, gears were an important mechanical component. They had the advantages of efficient transmission, strong carrying capacity, and stable operation.