Four months after the battle at Nagoya Castle, Yu-yu and friends received an invitation to a tournament. That "Deluxe" tournament aims to determine the strongest fighter, bringing together both "Front Fighters" who are active in official tournaments, and hidden powerhouse "Counter Fighters" like "Blackout" that compete against each other for flags. The existing characters from overDress will be competing with new characters from will+Dress such as Raika, Michiru, and Urara, to become the strongest of them all!

Life back on the cruise following the Island Special Examination is anything but smooth sailing. Almost immediately after their return, the first-year students of Tokyo Metropolitan Advanced Nurturing High School face yet another special exam, with both class and individual points on the line. In addition to the complicated ruleset, more issues arise in the form of Kakeru Ryuuen and Kei Karuizawa. Angered by the previous test's outcome, Ryuuen is dead set on outdoing every class in the new challenge using any means necessary. Meanwhile, Karuizawa, a crucial pillar of Class D, is close to crumbling under the pressure of her past. The stage is now set for Kiyotaka Ayanokouji to once again—using the full extent of his planning, foresight, and ruthless manipulation—steer Class D to victory as dangerously close enemy forces try to bring it down.

At Fólkvangr, a front constructed inside an asteroid, the Gundam Lfrith is undergoing operating tests in the Vanadis Institute's laboratory. The Lfrith has not yet managed to meet the conditions imposed by the council, and test pilot Elnora Samaya is growing impatient. That same day, her daughter is celebrating her fourth birthday...

After the capture, Hajime was worried about the farewell to Miu that would occur when the trip resumed. Hajime and his friends were talking about "The Seven Great Legends of Elysen" as a memory before they left for the trip, but all of them were missed. However, in the final seventh adventure, he encounters a mysterious giant creature and is blown into the world of a devastated city! Hajime, who started to search for the stray Mew, fulfills a miraculous encounter there.