One common theme is emotional pain. Ren might be dealing with the stress of his double life, which could lead to feelings of isolation and depression.
Another theme could be physical harm. Maybe he gets injured during a Palace exploration or in a fight against Shadows. This physical hurt can then lead to his friends having to take care of him and deal with the consequences. Also, themes of betrayal might be present. For instance, if someone he trusts turns out to be working against him, it can cause a great deal of emotional distress for Ren.
I'm not sure about specific 'persona 5 ren hurt fanfiction' titles off the top of my head. But you can try searching on fanfiction websites like Archive of Our Own. They usually have a wide range of fanfictions related to Persona 5.
One common theme could be the struggle for identity. The OC in the Persona 5 universe might be facing challenges that make them question who they really are. Another theme could be the battle against the shadows, not just in the metaverse but also within themselves. And of course, friendship and betrayal are also often explored. For example, the OC might be betrayed by someone they thought was a friend, which leads to their 'hurt' state, and then they have to navigate how to deal with that while still trying to save the world.
One common theme could be emotional pain. Since it's 'ren hurt', there might be a focus on Ren experiencing some form of emotional distress, like heartbreak or feelings of betrayal. Another theme could be self - discovery in the face of that hurt. Ren might be trying to figure out who he is and how to move forward after the difficult situation.
One common theme could be the relationship dynamics. With a pregnancy involved, the way characters interact with each other, especially the pregnant character and their partner or family, often changes. There might be themes of support, worry, and anticipation.
One common theme is self - discovery. The female OC often has to figure out who she is within the strange world of Persona 4. Another theme is friendship. She forms bonds with the other characters in the game. And then there's the theme of facing one's inner demons, which is a big part of the Persona series in general. The female OC may have to confront her own Shadows and grow from the experience.
One of the main themes is her growth as a character. The fanfiction often delves into how she becomes stronger, not just in terms of combat abilities with her Persona, but also mentally and emotionally. For instance, how she overcomes the fear of losing her friends in battles against Shadows. Also, the theme of sacrifice is common, as she might have to make difficult choices to protect the world she lives in, similar to what she does in the game.
A common theme is the exploration of different Persona - user groups working together. For instance, the characters from Persona 3, 4, and 5 joining forces against a greater evil. Another theme is the comparison and contrast of the different Metaverse concepts from each game. Sometimes, there's also a theme of characters from different Persona games learning from each other's experiences and growth.
One common theme is self - discovery. The female OC often has to figure out her place in the world of Persona 5, discover her true self, and come to terms with her powers. Another theme is friendship. She forms bonds with the other Phantom Thieves and these relationships are explored in depth.
In kazuma x ren fanfiction, a frequent theme is the exploration of their different powers and how they complement each other. For example, if Kazuma has certain strategic abilities and Ren has combat skills, they might combine their strengths to overcome obstacles. Also, the theme of sacrifice often appears. One might be willing to sacrifice for the other in dangerous situations, which deepens their relationship. There's also the theme of self - discovery, as they learn more about themselves through their relationship with the other.
Another theme could be career balance. Since both Ren and Kyoko likely have busy careers, fanfictions may explore how they manage their work schedules and still make time for each other. For instance, Ren might have to go on a long filming trip, and the story could be about how they deal with the separation and reunion. It adds a bit of drama and realism to the relationship.