Wouldn't it be amazing if Shion and I made our own group? But Shion is so much better than me... To survive as a pop idol, you have to team up. At least, that's what Nonno told D'Artagnyan. Now D'Artagnyan wants to join up with Shion, but something strange happens when she sees a day on the job with Nobunaga, The Demon King of the 6th Heaven!