I really enjoyed this! The gameplay is there, the UI is lovely, and the dialogue is cute (it couldn't possibly hurt to have more dialogue because I do like the characters, though not necessarily ones you have to click through. Perhaps on level-up or certain milestones like lvl10, taking down an enemy, etc)

I think you should really reconsider buffs to income and xp gain because there are a few of them and they're expensive. I spent about half of my time grinding out a lower level just to buy more income. I just think a bit too much, making them less common, use a different currency, or make them milestone/challenge based would help. The fun part of gameplay is to keep challenging the level you're on and getting a little stronger each time.