One idea could be that Naruto is somehow transported to the Mass Effect universe and has to face the Reapers. His ninja skills might give him an edge in combat against the Reapers' minions. He could use his shadow clones to confuse the enemies and his rasengan as a powerful attack. For example, he might be able to take out a group of husks with a well - timed rasengan.
Naruto might initially be confused by the Reapers. But his natural curiosity would lead him to try and understand them. He could try to communicate with them using his own unique way, maybe through his chakra. If the Reapers attacked, Naruto would respond with his combat skills. He would be very direct in his approach, not afraid to engage in battle.
A common theme is the struggle for survival against the Reapers. The OCs often find themselves in the middle of the chaos of the Reaper invasion and have to fight to stay alive. It's a very intense and action - packed theme.
I really liked 'When Reapers Met the Ancients'. This fanfiction has a crossover between the Reapers and an ancient civilization in the Mass Effect world. It delves deep into the lore of both and how their meeting could change the course of the entire universe. It's a long read but definitely worth it for those who love exploring the deeper aspects of the Mass Effect universe.
Another popular trope is'reverse engineering the Reapers'. In these fanfictions, the races in the Mass Effect universe try to understand and use Reaper technology against them. It often leads to some really cool technological advancements in the story and new ways to fight the Reapers that add an exciting element to the plot.
Liara T'Soni can also be a great character to feature. Her knowledge of the Protheans could be crucial in a fanfiction. Maybe she discovers a hidden Prothean weapon that could turn the tide of the war against the Reapers.
One idea could be a story focused on a small, rag - tag group of survivors who have to band together to take on a Reaper - controlled outpost. They might not be soldiers, but ordinary people forced into extraordinary circumstances.
Well, first of all, writers will usually introduce Naruto characters into the Mass Effect 2 setting. They'll then bring along the elements that are unique to Naruto's world. For instance, the idea of ninja villages can be translated into something in the Mass Effect 2 universe. Maybe there are hidden enclaves of characters with Naruto - like abilities. Also, the concept of the Sharingan or other dojutsu can be incorporated. A character in Mass Effect 2 might gain the ability to use the Sharingan and it could affect their perception and combat abilities in the new setting. Writers also use the values and relationships from Naruto, like the bond between teammates, and apply them to the Mass Effect 2 characters.
One popular theme is rebuilding. After the destruction of the Reaper War, characters often focus on rebuilding their civilizations, whether it's the Citadel races or those on the fringes. Another theme is dealing with trauma. Many survivors have PTSD from the war, and fanfictions explore how they cope. Also, exploration of new technologies discovered during or after the war is common, as races try to use these to better their futures.
Another good one is 'Among the Reapers'. This fanfiction follows an OC who gets caught up in the Reaper invasion. The story delves deep into the lore of the Mass Effect series and shows how the OC copes with the terrifying reality of the Reapers. It's a great read for fans of the series who want to explore different perspectives.