J-pop singer Ado should perform the opening or ending theme for Jujutsu Kaisen Season 4.

Ado is one of Japan's most recognizable contemporary singers, known for her extraordinary vocal range, emotional delivery, and ability to adapt her voice to many different musical styles. She has already contributed songs to several successful anime projects, including Blue Lock ("MONSTRO"), BEYBLADE X ("Stay Gold"), One Piece Film: Red ("New Genesis," "Tot Musica," "I'm Invincible," "Backlight," "Fleeting Lullaby," "The World's Continuation," and "Where the Wind Blows"), SPY × FAMILY ("Kura Kura"), and Cat's Eye ("CAT'S EYE" and "MAGIC"). These collaborations demonstrate her experience creating memorable songs that capture the atmosphere of an anime while resonating with audiences.

Jujutsu Kaisen is one of the most popular shōnen anime series in recent years, centering on sorcerers who battle supernatural curses. Fans expect Season 4, which is anticipated to release in 2027, to adapt some of the manga's most intense and emotional story arcs. Because of the scale and emotional weight of these events, the season deserves a theme song that can match its intensity.

Ado's powerful vocals and dramatic style make her an excellent choice for either the opening or ending theme. Her ability to transition from soft, emotional melodies to explosive, high-energy performances would perfectly complement the darker tone and high-stakes action expected in Season 4. A song performed by Ado could elevate the emotional impact of the season while creating another memorable opening or ending that fans would associate with one of the biggest arcs in Jujutsu Kaisen.