After Hazuki is taken away to Oyakata-sama's castle, the Nameless One gives Kouhei a powerful weapon to use in the fight to get her back. Weapon in hand, Kouhei, Kaoru, Art and Hikaru leave the island to look for gate to the Eclipse Side, which is where Hazuki is being held, but how are they supposed to find it? Only with the help of an old friend...
— Description from Comic Vine community (comicvine.gamespot.com).
