If he remembered correctly, that should be Prince Menia's dragon partner, Tasa!
He also had a dragon scale given to him by the other party.
Even though he didn't know what the particularly gigantic Red Dragon signified, it was clearly strong support from the Empire's side!
"Great! It's the Red Dragon King, 'Flame Throne' Straz himself is here." Lothar immediately let out a sigh of relief, saying.
Facing the impending Void Mother Tree, Ganeshir, as the commander of the Empire's reinforcements, the pressure on him was something others perhaps might not understand.
"Yes, and also Red Queen Menia!" Reginald nodded and smiled slightly.
Reginald and Lothar had just wrapped up their entanglement with Mother Tree Sect's Pope Manne and conveniently arrived by the Destroyer Demon Statue where Rein was.
"Flame Throne?" Rein pondered to himself.
