I absolutely love this microfiction VN series! The concept of alternate / parallel universe romance and remembering details of it while the current you cannot be with that person is something I've always found intriguing.
You present it beautifully with poetic prose that is accompanied by gorgeous painterly storybook CGs: it has that feeling of watching life unfold as a bittersweet nostalgic movie. The minimality of the specific lines that are spoken by the characters leaves a strong impression too, makes you really linger on that specific memory.
Is there also a part 3? (I can't find it on the jam page).