Daigo tells the others that Mikoto "Meeko" Amano is coming back to Japan as Yayoi is told of the events of her last visit and feels threatened by her closeness to Daigo. With Amy as her clueless helper, Yayoi spies on Daigo meeting up with Meeko before realizing the girl is armed with a weapon: Deathryuger's Flute Buster. Confused by Meeko's sudden attempt on their lives, a figure emerges that Daigo recognizes as the Ferocious Knight D. Upon revealing he escaped from Deboth Hell, D explains that he went to convert Meeko into his minion and has gained new power, no longer needing the Deathryuger's Zyudenchi. With Meeko playing the Flute Buster, D overpowers Kyoryu Red, Kyoryu Pink, and Kyoryu Violet until the other Kyoryugers arrive. While the others deal with D, Kyoryu Red tries to reach through to Mikoto using the "Dino Soul" song before his transformation is cancelled as Amy gets herself gravely wounded to save him from D's attack. Before D can land a finishing blow, Bragigas arrives to save them. While Yayoi tends to Amy's wounds, Daigo leads the men on an assault on the broadcast station where D intends to have Meeko sing to raise an army of the dead. However, D intercepts them and overpowers them as Daigo explains that Meeko is still fighting his spell. By then, Amy and Yayoi arrive with an idea to save Meeko with the combined melody of all ten Kyoryugers. Though D explains that he sicced a thousand Zorima on Torin and Tessai while they were checking up on Ramirez, he learns that the three extra Kyoryugers have easily defeated the grunts. Assembled, the ten Kyoryugers' harmony restores Meeko to normal before they transform to fight D's gathered army while Kyoryu Red Carnival deals with D. After being given the Tobaspino Zyudenchi, Kyoryu Red uses it with the Stegotchi Zyudenchi to weaken D as Kyoryu Red Samba Carnival Special before the Kyoryugers defeat him with the Ten Zyudenryu Victory Maximum Brave Finish. Furious, D douses himself in Restoration Water with the intent to destroy the planet. However, Meeko's singing summons Tobaspino, and the Kyoryugers use him to form Spinodai-Oh, finally destroying D once and for all. Later, much to Daigo's dismay, Meeko is invited to shop with Yayoi and Amy as part of the former's plan to get her away from Daigo.[39]