Perhaps in the fanfiction, Dark Rockman loses his memory and Netto finds him. Netto tries to help Dark Rockman regain his memories while also protecting him from other forces that want to use Dark Rockman's power for evil. This could lead to a series of adventures where they explore different areas of the net world to find clues about his past.
Another way is through misunderstandings at first. Dark Rockman might think Netto has ulterior motives, and Netto might be a bit scared of Dark Rockman's power. But as they interact more, they realize they were wrong about each other. This process of realizing their misjudgments can bring them closer together, and they can then build a strong relationship based on trust and mutual respect.
I'm not entirely sure as the 'dark rockman and netto hikari story' isn't a widely known mainstream story to me. It could potentially be a fan - made or a very niche story within a particular community.
Based on the name 'dark rockman and netto hikari story', the two main characters are clearly Dark Rockman and Netto Hikari. Dark Rockman might be a character with unique powers or abilities, perhaps related to rock or some sort of dark energy. Netto Hikari could be a character with his own set of skills, maybe something more related to light or positive energy. They are likely to be central to the plot, whether they are friends, foes or something in between.
One idea could be to explore an alternate universe where Rockman has different elemental powers. For example, instead of being good at electric - based attacks, he could have fire - based ones. This would change the dynamics of his battles and relationships with other characters.
Well, a plot might involve Dark Spyro and Dark Cynder trying to find a way to break free from an ancient curse that binds them to their dark forms. They could travel to different realms in search of a cure. Also, perhaps they start to question their dark nature when they encounter a group of innocent creatures and have to decide whether to harm them or not. Maybe they get involved in a power struggle within the dark side, with other dark entities vying for control over them.
One interesting plot could be that 'dark kushina' initially tries to manipulate Naruto for her own goals but gradually develops real feelings for him as she gets to know him better. Another could be that they are forced to work together to save the Hidden Leaf Village from a powerful enemy.
Maybe a plot where Dark Percy has some sort of power that Thalia needs to save someone she loves. Thalia has to convince Percy to use his powers for good in this case, and in the process, they develop a complex relationship. Percy is conflicted between his dark side and the pull he feels towards Thalia's cause.
One idea could be that Dark Sonic and Blaze are from different dimensions but are brought together by a powerful villain. They have to put aside their differences and work together to defeat the villain. In the process, they start to understand each other's powers and motives.
One idea could be a struggle for power between Korra and the Dark Avatar. Korra, being the Avatar, has to fight against the Dark Avatar's malevolent plans to bring chaos to the world. Another could be a story where the Dark Avatar tries to corrupt Korra, using her insecurities against her.
One idea could be a story where Dark Sasuke, still influenced by his vengeful desires, is forced to team up with Naruto on a mission. Their clashing ideologies create constant tension, but as they face various challenges together, they start to understand each other more. For example, they might encounter an enemy that can only be defeated by combining Sasuke's dark and powerful jutsu with Naruto's unwavering spirit.