If Ash hates Serena fanfic, perhaps the fanfic community could come up with some guidelines. These guidelines would ensure that the fanfics respect the essence of all the characters, including Ash. They could also encourage creativity in a way that doesn't make any character feel misrepresented or out of place. Additionally, the creators of the fanfic could ask for feedback from the broader Pokemon fan community to see if their work is likely to be acceptable to characters like Ash, based on the general understanding of the characters' personalities and the world they live in.
The writers could stop writing that type of fanfiction if they respect Ash's 'feelings' (assuming he were a real person with real opinions).
Perhaps the fanfiction community could create some guidelines for writing Alola - related fanfictions. These guidelines could ensure that the stories are in line with Ash's character and the spirit of Alola. If the quality of the fanfictions improves, there's a chance that Ash might not hate them as much.
One common theme could be jealousy. Maybe Serena is jealous of Ash's attention to his Pokemon or other friends. Another theme might be competition. She could hate Ash because she sees him as a rival in the Pokemon world. Also, it could be due to misunderstandings. Ash might do something that Serena misinterprets and that causes her to dislike him.
They could also consult the original source material more closely. By staying true to the characters' personalities as in the Pokémon anime, Ash might not hate the fanfiction. For instance, if Ash is shown as his determined self in the fanfiction, he may be more okay with it.
In some fanfictions, Serena might have accidentally released one of Ash's Pokémon. Ash is very attached to his Pokémon, and such an act could make him angry and start to hate her.
One option could be to simply avoid showing Karin any Sakura fanfic. Respect her feelings and keep that type of content away from her.
He can simply avoid reading it. Just stay away from any fanfic related to Edward and focus on the original work or other things he likes.
If the oc hates it but still wants to give it a chance, they could try to find a different take on the rias fanfic. Maybe look for ones that are more in line with their own values or interests. For example, if the oc is interested in action, find a rias fanfic that has more action elements rather than just the typical romance. Another thing to do is to try and write their own version of a rias - related story that they would like, incorporating the elements they enjoy and leaving out the ones they don't.
Well, she could simply avoid reading them. There are plenty of other things related to Sonic that she can engage with, like the official games, comics, or animated shows.
Typically, Ash and Serena fanfic often focuses on their relationship. It could be about their budding romance, like how they slowly realize their feelings for each other. For example, in many fanfics, Serena's shyness around Ash and Ash's obliviousness to Serena's feelings are played up.