Yes, yes and... yes!! There's like 4-5x more content already in the paid game, compared to the demo. And even more is eventually coming (just taking me longer than anticipated, game dev is a bitch ahaha).
And I'm glad you enjoyed the writing! The lore, characters and dialogues are written all by me (maybe just a few lines are ai-supported cuz I had empty head there).
So, I'm very happy to hear you enjoyed it this much. And I hope if you decide to buy the full version it won't disappoint either!