They could start by having a common goal, like protecting a certain planet or a group of people. This shared objective would make them interact more often and gradually understand each other better.
Since Broly has a rather wild and untamed personality, Naruto could learn to be more in touch with his primal instincts. This doesn't mean Naruto would become a brute, but rather he could find a new balance between his kind - hearted nature and a more aggressive side when necessary. For example, in negotiations or battles, Naruto could be more intimidating. Also, Broly's loyalty to his own beliefs (even if they are sometimes extreme) could inspire Naruto to be more firm in his own ninja way.
When writing 'broly and oc fanfiction', focus on character development. For Broly, you can explore his emotions more deeply, like his anger or his moments of vulnerability. For the OC, create a character arc that shows growth. Also, build a believable relationship between them. Maybe the OC starts as an enemy but gradually becomes Broly's closest friend. Use vivid descriptions of their battles and the settings they are in. This will draw the reader into the story and make it a great 'broly and oc fanfiction'.
First, understand the characters well. Know Broly's aggressive and powerful nature from Dragon Ball and Naruto's growth - oriented and determined character. Then, create a unique plot. Maybe have Broly arrive in the Naruto world through a strange portal. Keep the action scenes exciting, like when Broly uses his Ki blasts against Naruto's jutsus.
Broly's fighting style is wild and unpredictable. In the Tournament of Power, this could be a game - changer. His erratic movements and powerful attacks would force opponents to adapt quickly. However, it also means he might overextend himself. For example, he could leave himself open to counterattacks while going all - out on an offensive. His fighting style might also inspire fear in some opponents, which could affect their performance in the fight.
If Broly participated in the Tournament of Power, he would be an absolute powerhouse. His raw strength and uncontrollable rage could either make him a wild card that disrupts the whole tournament or a key player for his team. He might start by randomly attacking opponents without much strategy, but as the fight goes on, his natural fighting instincts could kick in and he could become a real threat to the strongest fighters in the multiverse.