"The Smile of the Triple Edge"
Nagumo is a member of the prestigious Order (ORDER), a group that brings together the world's deadliest assassins. Despite his laid-back, youthful appearance and often joking demeanor, Nagumo possesses a cold and calculating mind, making him one of the most dangerous fighters in his organization. His most distinctive feature is his weapon: a gigantic six-function Swiss Army knife (though the image emphasizes its triple-edged configuration) which he wields with terrifying skill. A former partner of Taro Sakamoto (the series' protagonist), Nagumo walks a fine line between loyalty to his old friends and his unwavering duty as a member of the Order, always concealing his true intentions behind an enigmatic smile and a sharp gaze.