The Blue-Eyed Material

Aoi keeps her distance from her classmates even a month after transferring to a new school. Her childhood friend Haruka tries to get her to be more sociable, but Aoi pushes her away. One day, while skipping class and eating lunch on the school balcony, Aoi is struck by a slime-like substance. It slowly takes the shape of a human girl, beginning an unusual relationship between Aoi and her new, possibly alien sister.