TV-Series
Description
Kamui Katsuragi, a prominent figure in the Cardfight!! Vanguard franchise featured across series like the Stride Gate arc, radiates energetic enthusiasm for Vanguard fights. He bristles when underestimated due to his youth or short stature. A persistent crush on Emi Sendou motivates many of his actions, leading him to address her brother Aichi Sendou as "older brother" in hopes of winning her favor. Kamui often misuses words or phrases, resulting in comical mishaps and subsequent embarrassment upon correction.

His background includes childhood bullying, countered by Gouki Daimonji who taught him strength transcends physical power. This mentorship instilled fierce loyalty to the Nova Grappler clan, a promise to Gouki he maintains steadfastly, even during upheavals like the Link Joker crisis when others switched clans. Originally patronizing a different card shop, Kamui became a regular at Card Capital and joined Team Quadrifoglio (Q4) with Aichi Sendou, Misaki Tokura, and Toshiki Kai. Within Q4, he frequently vied with Kai for recognition as the strongest fighter, their contrasting styles—Kai's detachment versus Kamui's passion—fueling friction. This rivalry culminated in Kamui abandoning the team during their first national tournament due to Kai's dismissiveness, causing Q4's early elimination—a decision he later deeply regretted, vowing unwavering team support thereafter.

As a cardfighter, Kamui exclusively wields Nova Grappler decks, prioritizing aggressive tactics that exploit the clan's signature ability to re-stand rear-guards for multiple attacks. His decks evolved from Asura Kaiser and Mr. Invincible to incorporate the Beast Deity series, Raizer series, and Stern Blaukluger. His strategy overwhelms opponents with consecutive assaults per turn, leveraging Stand Triggers to re-stand units, and he prefers taking the second turn to secure the first attack. A unique trait is his demonstrated fourth-wall awareness, such as physically tearing apart Chrono Shindou's narrative during a story retelling.

Kamui experiences significant development: reconciling with Kai during the Legion Mate arc by defeating him to prove the value of teammates; actively combating reversed fighters like Gouki and Nagisa during the Link Joker incident, confronting a reversed Aichi; being defeated by Kourin's Quintet Wall but later helping free Aichi; enduring temporary memory loss in season 4 where he forgot Aichi, regaining memories after a loss to Naoki Ishida. In Cardfight!! Vanguard G, he mentors Chrono Shindou, introduces him to Vanguard, and forms Team TRY3 for nationals. He balances this with part-time work at Card Capital 2 and studies at Hitsue High School, though his academics sometimes necessitate remedial classes. He joins the Dragon Empire Quest in GIRS Crisis to support Team TRY3 and investigates events during the Stride Gate arc while managing schoolwork.

His relationships are central: the foundational bond with mentor Gouki Daimonji shapes his clan loyalty and values; close friendships with Reiji Uno and Eiji Saga feature Reiji commenting on Kamui's boasts followed by Eiji abbreviating the statement and appending "-ssu!"; respect for Aichi Sendou exists both as a fighter and a link to Emi; as Chrono's mentor, he guides the younger fighter's growth and team dynamics. Achievements include being the second person to defeat Aichi, securing a Cross Break Ride victory, and battling every member of "Ultra Rare," though he consistently struggles against opponents employing Quintet Wall strategies.