Radiant Dragon · Stardust!
Like the "Moonlit Rose Dragon · Black Rose" that Aki Izayoi had summoned before, this dragon should not have existed in the 5DS world based on the anime.
It was one of the dragons wielded by the protagonists in the 5DS manga, known as a "Duel Dragon." Radiant Dragon · Stardust was precisely manga Yusei's Duel Dragon, and could also be regarded as another form of Stardust Dragon.
"This is the new Stardust—the new possibility of me and my friends!" Yusei shouted.
Of course, just like "Moonlit Rose Dragon · Black Rose," Yusei had learned of this form because of Kira. He had learned of Stardust, and of the possibilities he possessed.
Yusei clenched his fist.
Ever since that person had left, they had not relaxed for even a moment.
They had continuously designed and improved their D-Wheels, raced day and night, dueled without pause, and fought their way through the WRGP.
Yusei believed that both he and his companions on the 5DS Team had grown stronger during this time.
It was for their respective futures, for this world, and even more so, so that when that person returned next time, they could reunite with him with their heads held high.
"Go, Radiant Dragon · Stardust, carrying our new possibilities!" Yusei played another card from his hand. "I activate the Equip Spell 'Phoenix's Battle Wings'! (Original Work Card)
Equip this card to Stardust!"
Flames suddenly spiraled up across the Field, forming a towering firestorm. As though conscious, the flames converged upon Stardust, covering its entire body like burning armor. Bathed in fire, Stardust Dragon looked as though it had transformed into a phoenix reborn from Nirvana.
Semimaru: "What? That dragon looks like it's burning, but its attack power..."
Yet Radiant Dragon's attack power did not change