This is a request by  husarius-01 for Serena of the Pokemon franchise being bound and gagged in her bikini. This kidnapped trainer has been left to struggle in her bounds.

Serena is a Pokémon trainer of the Kalos region and one of Ash's traveling companions. Her goal is to become a top-class Pokémon Performer. She and Ash met before the start of the series when Ash aided her in her time of need. She developed a crush on him from that day on and it is one of her most notable characteristics, evidenced by her blushing whenever she looks at or talks to him.

Serena is a very kind and polite girl, although she was rebellious and disobeyed her mother at the start of her journey. In addition to her kindness, she is very helpful, always concerned about what her friends are doing, especially Ash, and tries her best to keep their spirits up. She also has a passion for fashion and clothes, always searching for the prettiest and most stylish outfits to wear. As a result, she hates getting dirty and being soaked in mud. Much like May, Serena also adores trying out the various popular food spots in cities and towns, especially desserts. However, unlike May, Serena is very modest and demure ‐ at one point in the anime, she almost got injured when she chose to hold her skirt down while falling rather than making a safe landing. She also gets incredibly flustered and embarrassed very easily, especially when someone teases her about her not‐so‐secret crush on Ash. She also easily gets jealous if someone, like Miette, attempts to take Ash away from her.

Originally, Serena was uncertain about what paths or careers to pursue in life, and she also expressed little ambition towards becoming a full‐time Pokémon Trainer in the early stages of her journey, while her mother wanted her to be a Rhyhorn racer. However, after seeing Ash, Clemont, Shauna and everyone around her reasons for traveling was to achieve their dreams, she eventually began to think that not having an established goal was a problem for her future as a Trainer. Eventually, she decided that her goal was to be a Pokémon Performer, and ever since she has been diligently training both herself and her Pokémon. After losing her first Pokémon Showcase, Serena strengthened her resolve to do even better, signifying this by cutting her hair short.

Through her journey, Serena went through a great change in her personality. She became a very strong and determined girl, as shown when she reminded herself of Ash's motto, "Don't give up 'til it's over!", and when she would take hits for her Pokémon. However, Serena sometimes blamed herself for problems that occurred or whenever she fought with her friends, despite everyone around her telling her that it was all right or assuring her that it wasn't her fault.