For 13 years, Yuria Aikawa's whereabouts have been unknown. All of a sudden, she reemerges and returns to her family. What awaits Yuria is a world that have completely changed.

A school comedy taking place in Tokyo in 2034. Copihan is a joint project of Gonzo and Kei, the illustrator of the manga version of Copihan who is best known for Hatsune Miku.