A series to commemorate the 10th anniversary of the "Gundam Build" franchise. A new Internet service has been born in the world of Gunpla. Within the Metaverse realm, the user can control their own avatar, interact with other users, play Gunpla Battle, and purchase actual Gunpla. Rio Hojo is a boy who has dived into this new world. Studying Gunpla building techniques in the real world with Seria Urutuski, and absorbing Gunpla Battle know-how from Mask Lady in the Metaverse world, he has been honing his skills day by day. After completing his own original Gunpla, the Lah Gundam, Rio happens to encounter some past champions of Gunpla Battle in the Metaverse realm.

After the end of the Hokuriku front, a new land for the Japanese people was created, governed by the New Japan Cooperation Organization. However, this did not dramatically improve the situation in Japan. The effective control of the various powers in the country continued, and the oppression of the Japanese people, though lessened, continued. The same is true of the isolated islands in the South Sea. The Oceania Army, which is in effective control of the island, and the resistance organization "Hinukan" that resists them. Then the North American forces attacks, aiming to take over the isolated island--.

Alongside Yamato, Momonosuke Kozuki recounts the great adventures of his father Oden—a renowned daimyo revered throughout the Land of Wano. From the days of Oden's youth to his last moments of glory, Momonosuke comes to understand the hardships and personal growth that his father experienced to eventually become the man he was.

Kuno purchases a strange egg, believing that the mysterious powers of the legendary Phoenix will help him defeat Ranma. But when the egg hatches on his head, the bird goes out of control and wreaks havoc all over Tokyo. Ranma and the gang must use any means necessary to get the Phoenix to leave Kuno's head and fly away.