...That's something you might have to take up with Pibu. I'm pretty sure he'll evolve when his bond with you is at its strongest.

[He's certainly old enough to evolve at this point. Regardless, Silver pulls a Cheri berry off of one of the plants in his room and offers it to Pibu as he speaks. ...He probably shouldn't encourage eating on top of his head while his hair is still wet, but whatever. There's a towel between them.]