Short episodes streamed on the anime's official site after every episode, giving background information about the show.

It is the year 2100, and on the colonized Moon, a project is under way to explore new aspects of energy. Amami Kurau is the daughter of the chief scientist on the project, and on her 12th birthday, she accompanies her father to the lab to observe the experiments. Then something goes awry, and Kurau is struck by twin bolts of light. In the aftermath, her father is dismayed to find that his daughter is no longer his daughter. Rather, her body is now home to two energy entities with fantastic powers. (Source: ANN)

The new OVA will feature the prequel short story Snow Globe, which debuted as part of a light novel volume that bundled with a limited-edition version of the original PC game.

Photon Earth is a young and gentle boy with superhuman strength and Baka (meaning idiot in Japanese) scribbled on his forehead (apparently by his troublemaking friend Aun Freya). One day, he finds himself engaged to the beautiful fugitive pilot Keyne Acqua after writing baka on her forehead. And that's the least of his worries as he must protect both Aun and Keyne from the evil Papacharino, who seeks to steal the secrets of Aho (another word for idiot) energy from Keyne's grandfather's ship. (Source: ANN)