Shun is an Xyz duelist and one of Yuto's closest allies, though he's arguably the more aggressive of the two. He's obsessed with taking down the Leo Duel School and has a visceral hatred of Fusion Summoning—something that eventually aligns him with Reiji once he learns what Reiji's really after. The two end up working together toward their shared goal.
These days, Shun's all business in a duel. He's intense and uncompromising, driven by a combination of raw skill and pure determination. Fans often note his arrogance and the obvious pride he takes in his abilities, which makes sense given how dangerous he is. Unlike Yuto's more measured approach, Shun tends to act on impulse and won't hesitate to go after anyone he sees as an obstacle—he's made it clear to Yuto himself that he won't hold back if it means reaching his objectives.
What really drives him, though, is his younger sister Ruri. He's fiercely protective of her and has made it his personal mission to rescue her. That protective instinct bleeds into everything else: his dueling style, his willingness to burn bridges, his refusal to compromise. He may have dueled casually in the past, but that person's long gone.
Content compiled by AnimeList.moe from publicly available sources.
