Thank you for taking the time to write a bit about the game. All good, coming update quite a bit of stuff will be improved including some of the things you mentioned. Skipping time is done by either working or sleeping, a fast forward button or something could be a thing in the future but I feel that it's not needed as there currently are over 250+ events in the game split by 90 days which averages around 2.7 events being available every single day and that excludes a lot of extra stuff.
As for Nani, she has three different endings of which one is funny, one she will return to where you met her(good ending), and the third one being a bit darker.
In any case, we're working very hard to make the game as good as possible. Things basically get better with every new update that comes out.
In about 10 days I'll post an extended dev log with the coming changes/ideas behind them from my point of view because a pretty damn big Lewd Town Adventures 0.10 update is almost done.