The UI might be able to use a bit of work, I think. The smart watch is probably pulling a bit too much weight, especially considering how little real-estate it takes up and that it's not in a corner of the screen people often look at for pressing info.
Particularly with the energy meter; it took me forever to realize that my energy meter was on the watch, and even then I often don't have it up because I'm looking at a different bit of info on it so energy management feels more awkward than it otherwise might. Given how important energy management is it'd probably be better to have at least that constantly on the screen somewhere instead of in a rotating display.
Looking forward to seeing where this goes, since I'm a fan of the games it was pretty clearly inspired by. A touch curious on how far the sleep stuff is going to end up going, since it's a big part of what I like about the...Imouto Life? Living With My Sister? Whatever-that-series-is-called-now series. It doesn't look like you're going to take it as far as they did based on how I'm reading things (and if so, no bother, you're not into what you're not into), but I'm curious as to whether I'm actually reading it right.