In 'senran kagura male oc fanfiction', a frequent theme is power and growth. The male OC may start off as a relatively weak or inexperienced character and then gradually become stronger through training and facing challenges. Also, romance can be a common theme. Since the Senran Kagura world has many interesting female characters, it's not uncommon for a male OC to get involved in a romantic relationship with one of them, which can add a whole new layer of drama to the story.
One great place to start looking for 'senran kagura male oc fanfiction' is on fanfiction.net. There are often many works that feature original male characters in the Senran Kagura universe. Another option could be Archive of Our Own (AO3). You might search for tags related to Senran Kagura and male original characters to narrow down the results.
A cool Senran Kagura Crossover Fanfic idea would be to cross it with a post - apocalyptic setting. The Senran Kagura characters have to survive in a world full of ruins and new threats. They could meet survivors from other universes or games. It would be interesting to see how their skills adapt to this new environment. Also, a crossover with a steampunk world. The girls would get to use steampunk - style weapons and gadgets while still maintaining their own fighting styles.
First, decide on the crossover concept. As I mentioned before, it could be with a different game, anime, or genre. Then, research both the Senran Kagura world and the world you want to cross it with. Know the characters, their personalities, and their abilities. After that, create an outline. Plan the beginning, middle, and end of your story. Maybe start with how the two worlds collide or how the characters meet.
The plot might involve the male reader suspecting the girl of cheating. He could start noticing little things like her being secretive about where she goes or who she's with. As he digs deeper, he finds out she's been making deals with the enemy or flirting with other guys for some advantage. This could then cause a big rift between them and the male reader would have to figure out how to deal with this betrayal.
Kagura might interact with Sakura. Sakura, being a strong - willed and intelligent kunoichi, could offer her medical expertise to Kagura if she returned injured. Or they could have a girl - to - girl talk about their respective journeys in the ninja world.
One common plot is the discovery of their relationship. Maybe someone starts to suspect that Naruto is hiding something, and they gradually piece together that he's married to Kagura. Another plot could be them facing opposition from their respective communities. For example, Konoha might not approve of Naruto's marriage to Kagura for some reason.