The series utilizes a rotating cast to voice the diverse set of characters across the 12 episodes. Voice Actor (Japanese) Mika Mikashima (Ep. 1) Mai Ishihara Shihou Mikashima (Ep. 1) Ryota Iwasaki Honoka Sakurai (Ep. 2) Ai Shimizu Hayato Kurosaki (Ep. 2) Akira Toyama (Ep. 3) Genta Nakamura Hana Ito (Ep. 3) Haruka Shamoto

The primary commercial product of the franchise is the series of visual novels released under the Eternity brand.

The story takes place in a world where the boundaries between reality and the spirit world are blurred. The main character, Shinya, is a young man who possesses the ability to see and communicate with spirits. He becomes involved with a group of girls, each with their own unique abilities and personalities.