Well, in this kind of fanfiction, the idea of Ash being betrayed in the context of having a Mew as a mate is quite an interesting concept. It might involve a plot where Ash's friends or some other characters turn against him because of his relationship with Mew. Maybe they see it as something abnormal or dangerous.
Well, in such a fanfiction, it might be about Ash being betrayed while somehow involved with Mew. Maybe his friends turn against him in the story for some reason related to Mew, like perhaps they suspect him of misusing Mew's power or something similar.
The main character is surely Ash. He is the one who is being betrayed. Mew is another important one. It might be that Mew is the cause, directly or indirectly, of Ash's betrayal. Then, Ash's Pokémon partners are likely to be main characters too. They might be confused or forced to side against Ash. And there could be some antagonists in the story, perhaps some evil trainers or organizations who are behind the plot to make Ash look bad and get betrayed.
One characteristic is the exploration of an unusual relationship. Ash is a human trainer and Mew is a powerful and elusive Pokémon. So, these fanfictions usually play around with how they communicate and understand each other. For example, some may focus on Mew's telepathic abilities and how it uses them to interact with Ash. Also, there's often a sense of wonder as Mew has such unique powers and Ash has his own set of skills and experiences. This combination makes for stories that are full of magic and discovery.
It could be that Mew has some sort of special power or knowledge that certain groups in the Pokémon world are after. They see Ash as an obstacle to getting what they want from Mew. So, they scheme to make everyone think Ash is untrustworthy. His friends, not knowing the truth, end up betraying him. Ash then has to fight against all odds to protect Mew and regain the trust of his friends.
Pikachu would most likely be there. Since Pikachu is Ash's closest companion, it would be involved in any story related to Ash. Maybe Pikachu could also have some sort of interaction with Mew, like being a bit jealous at first of Ash's new connection with Mew.
Sure. One popular 'Ash x Mew fanfiction' is 'A New Bond' which explores an interesting adventure where Ash and Mew form a unique connection. Another is 'Mew's Choice' that delves into Mew choosing Ash as a special partner in a world - saving mission.
In fanfiction, the relationship between Ash and Female Mew can be very interesting. It often involves unique storylines where Ash might encounter Mew in a different context than in the original Pokémon series. For example, the fanfiction could explore how Ash's adventures change when he has a special bond with Female Mew. Maybe they go on a journey together to discover new Pokémon or face a powerful enemy that only they can defeat as a team. This relationship in fanfiction can bring out different aspects of Ash's character, such as his compassion and determination in a new light.
I think Ash would be angry as well as hurt. He's a passionate trainer and his friends mean a great deal to him. He might challenge May in a Pokémon battle, not to defeat her but to make her see how wrong her betrayal is. And during the battle, he would keep asking her to come back to their old friendship.
Ash would be extremely hurt. He's a very loyal person, and having someone he cares about like Lillie betray him would be a huge blow. He might initially go into denial, not believing that Lillie could do such a thing.