I am absolute in Love with the artstyle and using heterochromia for the main character. Definitly a unique choice (In the best way possible). The wording is easy enough to follow without getting bored and the story just leaves me craving for more. I like the way of not defining what happened to the main character to end up in "prision". I kind of want to explore more of it. Everything just said is only my personal opinion though, so feel free to differ.

If thats something that the amazing crators want to know as well, in my humble opinion it would be interesting if the main character could have a lesbian relationship as well if the player chooses so. For me it would fit the story to some degree like the reason we end up in that "school" is rather vague and the way we ask our childhood friend about someone else. Just a suggestion though, so if there is some story you feel to be even better feel free to ignore that last part.