So I finished it. LONG demo. At least 2-3 hours, depending on your reading speed.
The 3d graphics did not grow on me. In fact, seeing snippets of the high-res 2d art along the way, I wish they'd used that with talking portraits like Umineko.
There are some fun robot battles that break up the VN segments, done with chained button presses, but none of them were difficult.
From my cursory knowledge of the language, they're in a robotics club(obviously), and the protagonist wants to make a robot to rival the one in his favorite show/online game.
Would buy if localized. Love the normal atmosphere of the game, despite some stereotypical anime trappings.