At first I thought this was going to be a simple cute farming game without much to it, but there actually ended up being a good amount of depth to the mechanics that made it really fun to play. On top of that, while I didn't think much of Youmu and Reisen as a pair at first, the fact that Reisen is essential to gameplay progression but every time she leaves you're left waiting around for her to come back, combined with the slight shift in graphics and music, makes it feel really lonely whenever she's gone. Then, when she comes back, it feels nice, and it's even more satisfying when you have enough money to not need to send her away anymore. That's a really clever gameplay-integrated way to make the player care about a couple and appreciate the weight of small things even in a game that otherwise doesn't have much of a plot.