&TEAM’s K Is Nagi Seishiro in Blue Lock Live Action Film — Summer 2026’s Most Hyped Anime Casting Just Landed

The Blue Lock live action film just dropped one of the most exciting casting announcements of 2026, and honestly, it feels perfect. &TEAM member K (real name Koga Yūdai) has officially been confirmed as Nagi Seishiro — the effortlessly gifted, perpetually unbothered footballer who steals every scene he’s in. For fans of both the anime and the K-pop group, this news hit differently.

K himself shared his excitement on his newly launched personal Instagram: he described it as his first solo film appearance and said he feels deeply honoured to debut through a project like Blue Lock.

Full Blue Lock Live Action Film Cast

Who Is Nagi Seishiro? A Quick Recap

If you haven’t followed the manga, Nagi Seishiro is the protagonist of the Blue Lock – Episode Nagi spin-off — a gifted player who picked up football almost by accident, yet displays god-tier natural talent. He’s lazy, unbothered, and yet impossible to ignore on the pitch. Sound familiar? Fans are already saying K’s laid-back charisma makes him a natural fit for the role.

The character is a fan favourite in the Blue Lock universe, and casting a K-pop idol of K’s calibre for this role signals just how seriously this production is being taken.

Release Date & What to Expect

The Blue Lock live action film hits theatres on August 7, 2026. The announcement teaser already gave fans a glimpse of K in Nagi’s signature eyeliner look, and the internet predictably lost it.

If you’re a fan of anime adaptations in 2026, this is one you’ll want to track closely. Between the stacked cast, the iconic source material, and now the Nagi reveal, this film has all the ingredients of a massive theatrical event.

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