一途

"一途" (Ichizu — "Single-Minded") was written for the *Jujutsu Kaisen 0* film, and it moves with the propulsive urgency of something chasing a target. Where King Gnu's ballads breathe, this one clenches: a driving rhythm section, guitars cut with a dry aggression, and an arrangement that keeps ratcheting the key of tension upward rather than resolving. Iguchi's falsetto pushes into a strained upper register that sounds less like beauty and more like insistence, while Tsuneta's lower harmonies anchor it with grit — the band's two-vocalist architecture used as a dramatic device, not a texture. Lyrically it is devotion as compulsion: a love so undivided it approaches obsession, the willingness to burn everything for one person stated without irony or hedging. The word 一途 in Japanese carries both admiration and warning, and the song lives exactly on that line. Placed against the anime's story of a boy bound to a cursed childhood promise, the single-mindedness reads as both love and doom. It's a song for motion — running, night driving, the walk you take when you've decided something and don't want to be talked out of it. Hearing it in a theater with the film's climax made it a generational touchstone for Japanese teenagers.