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.
I recommend " The Strongest Bishop in the NBA " to you. The protagonist of the novel traveled to the 2007 NBA draft and became the head coach of the Blazers. The plot mentioned the talented center Oden and the despised Durant, and the protagonist chose Durant. At the same time, the protagonist was chased by the team's boss and general manager. So this novel did involve a center named Oden. I hope you like my recommendation.