Naruto: The Whorl Within the Spiral

NARUTO-ナルト-外伝 ～渦の中のつむじ風～

The story of Namikaze Minato (Fourth Hokage), the winner of the world-wide popularity poll project NARUTOP99! Just how exactly did Minato, the father of Naruto, develop a certain jutsu...? (Source: MANGA Plus)