One idea could be that the gamer has special in - game skills that he can use in the Kenichi universe. For example, he might be able to analyze fighting styles like in a combat - strategy game and use that knowledge to help Kenichi train better.
A really interesting plot could be that Kenichi discovers a hidden mode in a popular fighting game that is actually based on real - life martial arts techniques. He starts to study the game to learn new moves and then has to face off against other players who also discovered the mode and are misusing the knowledge for evil purposes in the game world.
Another plot could be a crossover fanfiction. Imagine Kenichi meeting characters from other martial arts - themed anime. He could engage in friendly sparring matches or learn new techniques from them. This would not only expand his skills but also create interesting interactions between different anime universes.
One idea could be a fanfiction where a gamer discovers a hidden level in a classic game that transports them into the game world. They then have to use their gaming skills to survive and find a way back. Another could be about a group of gamers who compete in a virtual tournament with a mysterious prize at stake.
One interesting plot twist could be when Kenichi discovers that the game world he's been playing in is actually a training ground set up by his master in the real world to test his limits. Another might be that a character he thought was an ally in the game is actually a spy from a rival martial arts school trying to steal his techniques.
One idea could be the gamer character using in - game knowledge to outwit powerful foes in the Fate universe. For example, knowing the weaknesses of certain Servants and using that to their advantage in battles.
One idea could be that the main character uses their gamer skills to level up their Quirk in unique ways. For example, they might treat Quirk training like leveling up in a game, with different quests and achievements related to mastering their power.
A plot could revolve around a group of Pokemon gamers who enter a high - stakes tournament. But they soon realize that there's some cheating going on, and they have to expose the cheaters while also competing to win. They might use their unique Pokemon teams and strategies to outwit the bad guys. For example, one player has a team of all electric - type Pokemon that they use to disrupt the cheaters' tech - based cheats.
A cool plot could be that there is a glitch in the game world that starts causing real - world disasters. Spiderman has to figure out how to fix the glitch by going deeper into the game code, all while still dealing with his regular villains.
Another plot idea could be that the gamer system malfunctions and starts creating glitches in the RWBY world. This could result in strange creatures emerging or areas of the world getting distorted. The main character then has to figure out how to fix the system while also dealing with the chaos it has caused.
A plot could involve a gamer who is a master at first - person shooter games. In the Stargate universe, they find themselves in the middle of a battle against the Replicators. Using their quick reflexes and aiming skills from gaming, they start training the SGC teams in new combat techniques. Also, a story where a gamer accidentally hacks into the Stargate control system in the game and this somehow activates a real - life Stargate connection, leading to all sorts of adventures.