Mystery Gift is a function I’ve been working on in the background for Ecchi Version. My intended functionality is similar to that in the second generation where it’s an exchange between players and you’d have the trainer visit your game. You’ll be able to receive items, decorations, and more with them as well as battle against them once per day.

Similar to Cal in Stadium GS, it would be odd if you looked exactly the same, so your friend’s appearance will be based off of their Trainer ID. This is an old concept piece of one of the female trainers.
The next release will introduce the Mystery Gift functionality to the games. After saving, you will see an additional file in the directory named “(Player name).trainer”. This is a file you can send to or receive from your friends. If you place your friend’s “(Player name).trainer” into your Mystery Gift/Home directory, you will see them visiting your home!
The appearance is currently determined by modulo division of their Trainer ID, whereby it is divided by 4 and the remainder ( 0, 1, 2, or 3 ) determines the appearance. This system would allow me to evenly distribute appearances across trainer IDs, even expanding it. I plan to create additional appearances, so expect this to change in the future.

The appearance for trainer IDs with a modulus of 0.

The appearance for trainer IDs with a modulus of 1.
Now, here’s a quick question. Where do you want your guests to visit? The upstairs or downstairs of your house?
In the future, I intend to have the St. Andrew work as a place to host even more guests and expanding this functionality.