Ep. 29: Dark Mist Rises Part 2 features a perilous Duel involving Astral and Yuma.

29

The ruins emit a strange atmosphere that rejects Vector but accepts Astral for a Duel concerning the Mythyrian Number. The situation deteriorates rapidly because any damage inflicted upon Number 96 is simultaneously transferred to Yuma, effectively trapping Astral in a dangerous bind. Mocking Astral for his devotion to protecting Yuma, Number 96 summons his powerful Number C96: Dark Storm. However, an unexpected anomaly occurs within Number 96's body upon the appearance of this Chaos Number. This shocking development sweeps Yuma and his companions into the midst of the unfolding crisis, altering the course of the confrontation.