PLZA AU where everything is the same except AZ is the adoptive (grand)father of a 4 year old. (with art brought to you by the wonderful amazing @love-is-a-pearl!)
Introducing Gerallt (or Ger)! Old-fashioned name courtesy of his papa. He was found abandoned as a baby near Hotel Z before AZ acquired it and, when nobody came forward to claim him, AZ eventually took him in himself, considering him a sign that this was the right place to set down his roots. (Floette was also delighted at new life being around to brighten the place). Ger grows up at the hotel, and eventually ends up a surrogate little brother figure to Team MZ down the line as well! And, once he's older, he goes on a journey himself alongside Floette, as shown in the middle of the piece. (Various other things happen in his life, but I don't want to get into spoilers here.)
Before this game was even announced, I had come up with the idea of AZ adopting a kid sometime after the XY games. Since he's lived for so long, I liked the idea that he had looked after children before, even if unintentionally and/or sporadically (and then ZA went and supported my hcs by showing him adept at handling a group of teenagers). When his role in PLZA was revealed, I just couldn't stop thinking about the idea of him raising a child in the hotel, and this continued when I played the game, so I'm so pleased to have the opportunity for LiaP to render my imaginings so beautifully!