This is a really interesting polished VN that pushes the constraints of O2A2! It's a standalone package with narrative that supports the strong theming: the futility of the education system.
The web build actually works pretty good for me without lags. Just want to add that here, given that some players hesitate whether they want to download a short game or not.
The art is great and I like the stuff you do with the GUI: the dialogue balloons and the choices expressed as thought bubbles. The greyscale dreariness fits the school life well.
As for the VN structure itself, I enjoy the grade stat as it feels like a throwback to management sims. Despite there are 3 endings, there are multiple ways to reach them, and it's engrossing to see what new flavour texts you get by trying out each branch (say you do test faithfully, then cheat or other way round, etc. The morse code is a fun addition!).
I also spotted Myx cameo! That's her, right?