Obviously Naruto is the main character. Sasuke is often involved as well. Since Naruto's new bloodline power can change the power dynamics in their relationship. Sakura might also be there, perhaps helping Naruto to control his new abilities. Kakashi could play a role too, guiding Naruto in understanding and using the power of his awakened bloodline.
One possible plot development is that Naruto's awakened bloodline gives him the power to manipulate elements in ways not seen before. For instance, he could combine fire and water to create a new type of steam - based attack. This new power would make him a target for powerful villains who want to either control him or eliminate him. As a result, Naruto has to go into hiding while he learns to master his new abilities, and he meets some interesting characters during this time who help him on his journey.
Well, one possibility is that Naruto's new bloodline power could attract various female characters. Maybe they would be intrigued by his unique ability and want to get closer to him. For example, Sakura might see him in a whole new light and develop deeper feelings. And Hinata could be even more drawn to him, leading to some interesting romantic tension among the harem members.
Well, it could be about creating unique storylines within the Naruto universe that focus on the hidden bloodline abilities. Maybe it's a challenge where fans write about how characters with rare bloodlines face different trials or how these bloodlines are discovered and developed in new ways.
Often, the main characters in 'Naruto Hidden Bloodline Challenge Fanfiction' are not just limited to the well - known ones. There could be original characters created by the fanfiction writers who have newly discovered or extremely rare bloodlines. These original characters might interact with the established Naruto characters, and their stories could revolve around how they fit into the world of Naruto with their special bloodlines. For example, a character with a bloodline that allows them to control nature spirits could be a main character, and their story could be about how they use this ability to help or hinder the other characters in the Naruto universe.
It could be a water - based kekkei genkai. Since the Wave arc has a lot to do with water, it would make sense for Naruto to awaken a kekkei genkai related to water. This could give him an edge in battles, especially in the Wave region where water is abundant.
Sasuke is also commonly seen in 'Naruto Awakens' fanfiction. His relationship with Naruto, whether it be as a rival or an ally during Naruto's awakening, adds depth to the story.
There are also fanfictions where a bloodline is created through some sort of experimental jutsu. For example, a bloodline that allows the user to transform into different elements at will. This would give the character an edge in combat as they could adapt to any situation by changing their form.
One potential antagonist could be Orochimaru. He might be interested in Naruto's Mokuton powers for his own evil experiments. He could try to capture Naruto to study how he awakened the Mokuton and use that knowledge for his own gain.
Perhaps Naruto awakens memories from a past life that holds the key to defeating a great evil in the Naruto world. This could involve him learning ancient techniques and secrets long forgotten.