Episode 0 of Towa no Yuugure. The series follows Akira Himegami, a man who was put into cold sleep. Prior to this, he confessed his feelings to Towasa Ōmaki. Waking up 200 years later, he discovers that the world has changed, learning that an organization called Owel is in power. He then meets Yūgure, an android who proposes marriage to him. However, Akira believes that Towasa is still alive and aims to find her. He goes on a quest to find Towasa, with Yūgure joining him on his journey.