Infinite Dendrogram: Volume 3 by Sakon Kaidou

The day after Ray and Hugo faced off against the vile Gouz-Maise Gang, the city of Gideon was far livelier than usual, brimming with excitement and anticipation for a certain event. As one would expect from a metropolis bearing the title of "city of duels," the event was a match between two highly notable duelists: Figaro — the local hero — and Xunyu — one of the most powerful individuals from the far-east empire of Huang He. Both were Masters wielding the powers of Superior Embryos, and both would give their all to fight, make merry and emerge victorious. But a malicious plan unfurls itself in the shadows, who is it that seeks to strike the Kingdom of Altar at its most vulnerable? More importantly, who will survive the Clash of the Superiors?