Nisio Isin

Nisio Isin's short story 'UNDEAD' provided the basis for YOASOBI's theme song for the 'Monogatari Series Off & Monster Season' anime, whose music video surpassed 100 million views. His manga 'Magi-Roshi Gentlemen B.T.,' co-created with Posuka Demizu and based on an original concept by Hirohiko Araki, was released in book form on June 18.

Synthesized from 2 Yomimono stories · updated Jun 18

Nisio Isin's work appeared in two distinct projects in mid-2026. The music video for YOASOBI's 'UNDEAD,' the theme song for the anime 'Monogatari Series Off & Monster Season,' surpassed 100 million cumulative views. The song, released in July 2024, was based on short stories by Nisio Isin. Related TikTok user content reached 900 million total views. YOASOBI also announced a limited edition EP 'THE BOOK for' releasing June 26, 2026, and an Asian dome and stadium tour for 2026-2027.

Separately, the manga 'Magi-Roshi Gentlemen B.T.' was released in book form on June 18. The volume collects four episodes, including the title story about the elderly B.T. and Koichi, plus stories set in their youth and high school, and an extra round. The Ultra Jump July issue includes a different version of the book cover. The manga is based on an original concept by Hirohiko Araki, written by Nisio Isin, and illustrated by Posuka Demizu.

Key facts

Music video milestone: The music video for YOASOBI's 'UNDEAD' surpassed 100 million cumulative views. ↗
Song basis: The song 'UNDEAD' was based on short stories by Nisio Isin. ↗
Manga book release: The manga 'Magi-Roshi Gentlemen B.T.' was released in book form on June 18. ↗
Manga credits: The manga is based on an original concept by Hirohiko Araki, written by Nisio Isin, and illustrated by Posuka Demizu. ↗
Volume contents: The volume collects four episodes, including the title story about the elderly B.T. and Koichi, plus stories set in their youth and high school, and an extra round. ↗

Timeline

Jun 18, 2026 YOASOBI's 'UNDEAD' Music Video Surpasses 100 Million Views
Jun 18, 2026 Nisio Isin and Posuka Demizu's Magi-Roshi Gentlemen B.T. Manga Gets a Book Release

Synthesized by Yomimono from the cited Yomimono stories below, each itself sourced, then editorially reviewed. Every fact links the story it came from.

Connections

Writes: undead, mister beaty

Structured graph also available as JSON at /public/entities/nisio-isin. CC BY 4.0.

All coverage

Jun 18

YOASOBI's 'UNDEAD' Music Video Surpasses 100 Million Views

The music video for YOASOBI's 'UNDEAD,' the theme song for the anime 'Monogatari Series Off & Monster Season,' has surpassed 100 million cumulative views. The song was released in July 2024 and was based on short stories by Nisio Isin. Related videos, including TikTok user content, have reached 900 million total views. YOASOBI also announced a limited edition EP 'THE BOOK for' releasing June 26, 2026, and an Asian dome and stadium tour for 2026-2027.

Jun 18

Nisio Isin and Posuka Demizu's Magi-Roshi Gentlemen B.T. Manga Gets a Book Release

The manga "Magi-Roshi Gentlemen B.T.," based on an original concept by Hirohiko Araki, written by Nisio Isin, and illustrated by Posuka Demizu, was released in book form on June 18. The volume collects four episodes, including the title story about the elderly B.T. and Koichi, plus stories set in their youth and high school, and an extra round. The Ultra Jump July issue includes a different version of the book cover.