There is 1% chance Echo Project will reply to this, but oh well:
Hi there! I love the Adastra franchise for more than two years now and I'm planning on make a game of my AU. Could I have the permission? I can draw sprites of my own if you don't want me to use the already existing assets, as well as the backgrounds. If you don't want to, I will understand either way. Thank you for reading, if you did! I will absolutely give you credit, by the way, if I end up having permission!