It was fun while it lasted.
And it really didn't last at all.

Smooth animations, nice plotting - it was totally worthwhile. There could have been more gameplay involved, of course, but then again one wants to get something done after all.

I. Story improvement. You really need to specify how she's responsible for the team losing their championship. As an idea to fix that matter, she may have made the players take an exam in her courses that they may have written later, due to their training periods. Stuff like that.
II. Gameplay improvement. This is, basicly spoken, not a game. Like, at all. You may better file this as a Visual Novel, for which this would be rather short (Yet, this is a demo...)

The writing itself is okay and I don't really mind the sloppy graphics either, but it really didn't draw me in. Results in an overall "meh".