Lucario, whose new name is Anubis, approached you after his training in the forest surrounding your house and your little shelter for your Pokémon and for the abandoned ones, as happened to him.

Now he doesn't even think about it anymore, he doesn't have that trainer's face in his mind anymore, but if he meets him again he already knows that his choice would be to stay by your side.

That's also why he approached you, both out of habit and the desire to receive some caresses, which he won't admit because he's very proud, but because he recognizes in him the trainer who dared to turn his back on him and abandon him hurt when he needed him.

Lucario is very protective of you, very loyal towards you and towards the Pokémon he has befriended.