Thank you so much for the comment and for playing through the VN! I'm glad you enjoyed it!
And no, there are no stupid questions! I haven't made any AU VNs, myself. But I know of two that are currently in development:
1.) Bonely Hearts Club by owl-bones is a VN that features a lot of the AU Sans and Papyruses. They released a demo, so you can try it out!
2.) Nightmare Castle by StudioNovella is a VN RPG that features a lot of the AU Sanses. I don't believe there is a demo out yet, however.