Well, one key theme could be adventure with a twist. Since May is tied up, it might be about her getting out of a tricky situation during her Pokemon journey. Another theme could be friendship. Her Pokemon might try to rescue her, showing the strong bond between them.
I'm not sure if there is an existing 'pokemon dawn tied up fanfic' available. Fanfics can be quite diverse and often found on various fanfiction platforms, but this specific one might be hard to find or may not exist at all.
They can make it interesting by creating a unique setting. For example, if May is tied up in an ancient, mysterious place full of rare Pokemon. Also, by giving the tying - up situation a good backstory, like it was part of a prophecy or a test.
It depends on how it's done. If it involves any form of harm or distress in a way that goes against the general positive spirit of Pokemon, it might be considered unethical. However, if it's part of a creative and non - harmful story - like a rescue scenario where Quilava is tied up but then freed and goes on an adventure - it could be seen as an acceptable creative take.
I'm not sure if there are specific 'Pokemon Serena tied up' fanfics available. Fanfics can cover a wide range of themes and scenarios, but this might be a rather specific and perhaps not so common one. You could try searching on some well - known fanfic platforms like FanFiction.net or Archive of Our Own, but keep in mind that the content should abide by the site's rules.
A rogue Ghost - type Pokemon could be the villain. Since Acerola has a connection to Ghost - type Pokemon, a powerful and malevolent Ghost - type that has been angered by something she did (or something it misinterprets) could tie her up. It could be using its psychic powers or some kind of spectral ropes to keep her trapped.
One possible plot could be that Ash gets tied up by a group of Team Rocket grunts who manage to outwit him. They tie him up to stop him from interfering with their latest evil plan to steal rare Pokémon. His Pokémon then have to work together to free him and foil the villains' scheme.
Well, it's hard to say exactly as it depends on the writer. But it could be a situation where Dawn gets into some kind of trouble and is tied up, perhaps by a group of villains who want to stop her from achieving her goals in the Pokemon world, like competing in a big tournament or rescuing a rare Pokemon.
Team Rocket is the most likely candidate. They've always been after Ash's Pikachu and tying him up would be a way to stop him from protecting his Pokémon. They could use ropes or some kind of Pokémon - powered restraining device.
Maybe in the fanfic, Acerola is tied up as part of a mystery. She could be in an old, abandoned building on Akala Island. Some unknown force has tied her up, and it's up to the player character (along with their Pokemon) to solve the mystery, rescue Acerola, and discover who or what is behind this strange event. This could involve exploring the building, finding clues, and battling other Pokemon along the way.