[quote=@YoshiSkittlez]
How about a limit of characters? Like, I was thinking of having a brother/sister team with the brother staying behind in the city as an Eevee breeder while the sister goes out on the Pokemon journey. So he would still be a character, but probably recessed for a while until the plot picks up and then thrown into the middle of things...
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Depending on how many people join in, I would be willing for people to add another character in time. So I'd say yes, go ahead and make the sister brother and I would allow later for him to be involved.