I've only included special story events and unique one-time sex scenes in the gallery. There are over 800 events in the game, so setting up a gallery that big would take A LOT of effort.
But I also haven't updated the gallery in a while. I probably will in v0.14.
Appreciate the response. I understand that there are a lot of events and I'm sorry I wasn't clear. I meant that there were some sex scenes with Moon after the one that is seen in the gallery. I'm not expecting you to put in every single scene as there are a lot of them in the game with all those characters. Sorry again if I wasn't clear and really appreciate the effort you put into the game.