YOASOBI to Release New Song “KILLA” on November 11, Based on a Debut Novel and Co-Arranged by Someone Other Than Ayase for the First Time

5 days ago

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YOASOBI will release their new song “KILLA” on digital platforms on November 11. The cover art was revealed with the announcement, according to Natalie (November 8).

“KILLA” is the new song the duo has been playing on “YOASOBI ASIA 10-CITY DOME & STADIUM TOUR 2026-2027.” A short version came out early on November 1.

Based on a debut novel from the “Hajimete no” writers' club

The song is based on “Senpai wo Koroshitai node Josou Suru,” the debut work of Mabyo Yoano. Yoano was a first-term member of the “Hajimete no” writers' club, a program launched in 2022 to discover and develop new authors as part of YOASOBI's collaboration project with four Naoki Prize-winning writers.

A first: someone other than Ayase on the arrangement

Tsumiki (Aooo), an old friend of Ayase who also works as a Vocaloid producer, co-arranged the track. It is the first YOASOBI song with an arranger other than Ayase.

BRUSH MUSIC editor's note

YOASOBI kept their core idea, turning stories into songs, and opened the door to a new author and an outside arranger. They played the song live first, tested a short version, then put out the full release. Indie artists can borrow the same order: debut a song on stage, share a short clip, then hit release day with people already waiting.