Often, other dragon slayers are paired with Ryu. They can have different fighting styles and come from different backgrounds, which makes for an interesting dynamic when they work together.
A lot of ryu the dragon slayer fanfiction involves him encountering new and more powerful dragons. These stories often build on the existing lore of the series, expanding on the types of dragons and the challenges Ryu has to overcome. Some might even introduce magical elements that are not in the original story to make it more exciting.
Luffy from 'One Piece' could also be an interesting crossover. Luffy's stretchy abilities combined with Ryu's martial arts would make for some unique fight scenes. They could also learn from each other's determination and loyalty to their friends.
The Inquisitor is often paired with Abelas. Their relationship can be explored in many ways, from a mentor - student dynamic to a more romantic one. It makes sense as they both are involved in the events that shape the Dragon Age world during that period.
One common character paired with Samson could be Cassandra. Their personalities are quite different, and in fanfiction, this can lead to interesting interactions. Cassandra's strong sense of justice and Samson's more complex, morally ambiguous nature can create a lot of tension and drama in the story.
Often, there are original characters created specifically for the fanfiction that are members of the Ryu Clan. They can be young, ambitious warriors trying to make a name for themselves in the Naruto universe.
Naruto himself is often a popular character in such fanfiction. Writers might explore how he would adapt to the Shirai Ryu techniques and incorporate them into his already vast array of skills.
A strong female warrior could also be paired with Gaemon. She would be an equal to him in combat skills and courage. Their relationship could start as a rivalry but gradually turn into a deep friendship or even more as they face countless challenges side by side in the 'gaemon the dragon steel fanfiction'.
Some fanfictions pair Towa with Goku. It creates an interesting dynamic as they are on opposite sides of the moral spectrum. The story could be about Towa trying to corrupt Goku or Goku trying to redeem Towa. Their power levels also make for exciting battle scenes or power - up moments within the fanfiction.
Goku is often paired with Gine in fanfiction, as their mother - son relationship can be explored in different ways. Bardock is also a common pairing since he was her husband in the original lore.
Often, Goku is paired with Toppo in fanfiction. Their power levels and different fighting philosophies make for an interesting dynamic. They can have epic battles or team - up against a greater threat.