>>42756785When I bought ORAS/Y I spent over 300 hours on it, I had shinies, legendaries, competitive pokemons, etc, once I got bored of it I just sold it, whoever owned the game before probably just got bored too, I wouldn't think about it too much if I were you
Also, a while ago I bought a copy of UM used that I'm pretty sure was stolen, it had only been played for an hour and the boxes were full to the brim with shinies, event pokemons (some from WIN2011), etc, they were all transferred from different regions too, hoenn, johto, sinnoh, unova even, I'm pretty sure this dude transferred all this mons then lost/got their copy stolen from them 