well, I dont know, but the real thing i want to see the two elfes meeting the MC.
I had even some theorys about Lust doll plus, Elf jail and Rainy skies that maybe they are all the three in the same universe
When we think about it, all the three MCs have something in common. They woke up in a strange place with (maybe) no memory of their past.
In last doll plus we can see in the being of the game that there are two other capsules like the one where Lust doll was so i told myself that there was the two other games MCs to with Lust doll
I want to say that that was just i think, maybe im just trying to find an excuse for a collab but who know?