>>45487907In XY there's a lonely old man who's depressed after his wife died, so he asks if he can spend time with one of your < lv5 Pokemon. You leave it with him for the rest of the game until you beat the E4, then if you go back to his house there's nothing left there except a Poke Ball containing your Pokemon and a letter thanking you for letting him spend his last days with your Pokemon.
