The third blockbuster anime! ! Nanami confesses her feelings to Hikaru, and the two begin a journey to return to their own world, Ashihara Nokuni, from Nenokuni, the other world where they are connected for the first time, to free the four sacred beasts that are captive to the curse of evil spirits, but there is nothing waiting for them. It was a very sad reunion...The mystery deepens one after another. What will Hikaru and his friends see at the end of their journey?