This is isn't a horror game. It's a feeling game.
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The main character says, "What is it like to see the world with my eyes?"
Someday. Someday everyone will be able to see the world in your eyes too. Someday people will understand.
It's an interesting visual novel, different design from the usual visual novel developed using Renpy engine. The story was confusing at the beginning, but as the story progress it becomes more clear of what's happening. The pixel art is lovely, good combination between red, white, and black color to create a different perspective of the world. The dialog also describe the world the main character see quite nice.
Also, the main character isn't scary at all. This isn't a horror game. This is a story of someone who's being left behind by the society.