2 things that I couldn't let pass me by here...
1- The start of this game is also the start of the Dev on this. Yes, the interface is the stock one from Ren'Py. It is used by everyone when starting, because it is simple and works. This is later on changed on Part 2 and later refined on Part 4. So, yes you have a point, but, you should not judge that fast. Anyway, your problem was solved later on.
2- Animations? No. It even has a notice on the OP page. I don't think you really care about why, but, this was a conscientious decision by the Dev. He chose to produce content faster without animations and a few other tricks, in order to achieve a high volume of content in a short release cycle. This was initially a 1 update per month with around 750/800 stills per update (on a PC not equipped with a RTS level GPU), then later when he decided to make this game is bread winner to 2 updates per month (Day 1 and day 15) with around 600 stills per update. To do this, he had to cut corners, not only was he inexperienced in the 3D world, he also didn't have a good enough rendering machine. One of those corners was Animations.
We that have played this from the start, we really don't even notice the lack of them. Who knows, maybe you'll get into it also...
Anyway. Play it. Don't play it. Do whatever floats your boat. Just know that neither the interface that you see so very little of, nor the animations play a role in what makes this game special. And, no, I will not spoil it for you.
Peace