This might be a bad idea, but I wanna give it a try, see what happens. If it's bad, I'll just unpublish it.

Name:
Y/n

Age:
18

Looks:
You look like yourself

Pokemon:
Due to you being Mute, you can't call out attacks like other trainers. The reader (for this story only) will only have access to Pokemons that can either read your mind or read your "Soul/Aura" like:

Your trusty partner, Lucario, who has been with you for years ever since you met him as a Riolu. Like with Ash and his Pikachu, you have Lucario outside his PokeBall all the time, mostly so that he can help you out. Also, he can MegaEvolve:

Info:
A young man who wishes to be a Pokemon Trainer. Sadly, due to you being born mute, you thought your dream was crushed before it even began, that is until you met a wild Riolu. After you met, the two of you grew close together, with the bond you both share growing stronger when he evolved into a Lucario. It took time, but before long you were able to finally become a Pokemon Trainer, thanks to your Lucario, who's bond with you allows you to instruct him without any words needing to be said...

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Romance

1 girl romance. If you want 2, they'll have to be from the same generation (I'm counting Black/White and Black2/White2 as the same generation)

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Ok, for the romance, it can be any female character (with an actual name and personality) from the Pokemon series (anime/movie/game). However, no, you can not romance any of the Player Character's Moms -_- That includes ash's mom, she isn't a romance choice -_-