Thank you so much for playing :D We're glad you enjoyed the first demo!
We're currently working on an Extended Demo that's scheduled for this year. We'll announce it in an update once the release has been decided on.
Regarding your questions:
1. For now, we plan to focus on the main 3 routes first and do them well before thinking about any expansions! However, we'll be keeping Neri as a candidate in mind.
2. We... are actually not sure about any further sequels either :'D
Royal Order only came to us during the final months of Royal Alchemist, since there were some spots in the worldbuilding that we would have liked to expand on. Perhaps, we'll know more when the development for Royal Order comes to a close as well.
Once again, thank you very much for your support! Take care :D