A plot might revolve around Sherry being pregnant and her being a target because of it. In the Resident Evil world, her unborn child could potentially be a key to something, like a cure or a new form of bio - weapon. So, she has to constantly be on the run from various factions that want to either protect or use her child for their own purposes. Additionally, her pregnancy could also bring out a more maternal and protective side of her character that we haven't seen before, and she has to learn to balance her own survival with that of her unborn baby.
Well, a possible plot could involve Sherry discovering she's pregnant and then trying to figure out if the pregnancy was affected by any of the viruses or experiments she has been exposed to in the Resident Evil universe. There could also be a plot where the father of the child is a mystery, and she has to face the speculation and judgment from the people around her while also fighting off the threats of the bio - organic monsters. And perhaps she teams up with an unlikely ally who helps her throughout her pregnancy journey in this dangerous world.
One plot idea could be Sherry struggling to protect her unborn child in a post - apocalyptic Resident Evil world filled with bio - hazards. Another could be her dealing with the reactions of other characters, like Leon or Claire, who might be concerned for her safety. Maybe she has to find a safe place away from the infected to have her baby.
Yes, there might be some out there. Fanfiction platforms like Archive of Our Own or FanFiction.net could potentially have such stories. However, not all fanfictions are easy to find, and it also depends on the popularity of this particular concept within the Resident Evil fan community.
A cool fanfiction plot might be to introduce a new character who has a special ability to communicate with the infected. This character could either help Leon or create new challenges for him as he tries to rescue Ashley.
One common theme is survival. Since Resident Evil is all about surviving in a world full of zombies and bio - threats. The oc and Sherry often have to work together to stay alive. Another theme could be the discovery of new secrets about the Resident Evil universe. Maybe the oc has some knowledge or ability that leads them to find out something important related to Sherry's past or the origin of the virus.
You might consider a fanfiction where the main character has the ability to communicate with the Mold, and through this connection, tries to find a way to end the cycle of horror in the village once and for all. This would involve exploring the nature of the Mold, its intelligence (if any), and how it affects the inhabitants of the village both physically and mentally.
Survival is a common theme. Given the nature of the Resident Evil 2 world, Sherry often has to fight to survive in fanfics. Another theme could be her growth as a character, from a young and somewhat vulnerable girl to a more capable and strong individual.
A plot idea could be that there are hidden survivors in the areas affected by the virus in Resident Evil 5. These survivors have developed their own ways to resist the virus and they form an alliance with Chris and Sheva. They could share knowledge about the virus that was previously unknown, like a natural antidote that exists in a certain rare plant in the area. Also, what if the main villain had a change of heart mid - way through the story? Maybe they realize the horror they've unleashed and try to help Chris and Sheva stop it, but their past actions still haunt them and make it difficult for the heroes to trust them.
One idea could be an OC who has a unique connection to the Tyrant. Maybe they were part of the experiment that created it and now they have a psychic link. They could use this link to try and control the Tyrant's actions, which would create a lot of tension as they battle their own inner demons while also trying to stop the Tyrant from causing more chaos.
One idea could be that Naruto and his team are sent to the Resident Evil universe to find a cure for a virus that has started to infect the Hidden Leaf. They would have to face off against zombies and bio - weapons using their ninja skills. Another plot could involve a Resident Evil character getting transported to the Naruto world and having to adapt to chakra and ninja society. For example, Leon Kennedy could team up with Naruto to stop a bio - terrorist attack in Konoha.
A possible plot is that some of the characters from Naruto are experimented on by the Umbrella Corporation. Sasuke, for instance, could have his Sharingan enhanced in unexpected ways due to the unethical experiments. This would lead to a power struggle within him as he tries to control his new abilities while also dealing with the fact that he has been turned into a sort of bio - weapon. And then Naruto would have to find a way to save him without getting infected himself.
One idea could be exploring the backstory of Lady Dimitrescu's daughters in more detail. Maybe how they came to be and their lives before Ethan Winters arrived.