In Sakurashin, humans and demons live side by side in peace. But when a series of strange events threatens the delicate balance of their town, it will be up to four superpowered teens to restore order and save the day!

At his emperor's command, Ryner Lute and his long-time comrade Ferris set out on a search for the Heroic Relics. During this journey, Ryner makes a shocking discovery - a deadly curse is spreading across the continent.

Secuela en formato serie de los eventos posteriores a la película "KanColle: The Movie", dentro de la serie "Kantai Collection: KanColle".