Directed by Shunsuke Ishikawa, Blue Lock: Episode Nagi is an anime feature film based on the Blue Lock spin-off manga. Nobunaga Shimazaki voices Seishiro Nagi, with Yuma Uchida as Reo Mikage, in a football anime about talent, rivalry, friendship and the competitive training program behind Blue Lock. The film connects sports drama, anime energy, school-age ambition and the wider Blue Lock franchise.

Från IMDB:
Seishiro Nagi before he enters the titular Blue Lock facility.