Sequel to Diamond no Ace: Act II.

VAZZY and ROCK DOWN are the two units that make up Tsukino Talent Production's all-male VAZZROCK group. Led by Takaaki Mamiya and Shou Onoda respectively, both units announce via a round-table livestream that they are working hard to prepare for the upcoming VAZZROCK Live Flawless event. From taking extra dancing and singing lessons to starring in a TV period drama, these 12 idols must give it their all as they work toward a spectacular show that will impress their fans.

The four Ryudo brothers hold an ancient secret - they are descended from the dragons. They have the speed, strength and power of their legendary ancestors - and they're getting stronger. But when pushed to the limit, they become the terrifying, uncontrollable dragons of mythology. These powers have attracted the attention of some powerful enemies - shadowy organizations with unlimited resources and weapons who will stop at nothing to control the brothers. (Source: U.S. Manga)

Shotaro Kaneda is a young boy whose dead scientist father created the giant robot Tetsujin 28 after realizing the chances of attacks from outer galaxies. Shotaro has possession of the only controller, kept in an attaché case, which enables him to have direct command of the all mighty Tetsujin 28. If the controller goes into the hands of the enemy, this could lead Tetsujin 28 to fight for villains who want to destroy The Earth. Whenever peace in this world is threatened, Shotaro together with his friends, Dr. Shikishima, Detective Otsuka, must unleash the power of our metallic super hero. (Source: ANN)