The mysterious story and slow reveal kept me interested up until the very last minute. The low-poly aesthetic and division of the screen were also great storytelling devices which made this a unique and intriguing experience. The length was also just right for the well-written, open-ended but sentimental story. And being web-based is also a much-appreciated bonus.
In summary, it's definitely worth checking out, even if you aren't a fan of visual novels-- a demonstration of what video game storytelling is capable of at its finest simplicity.