Why did Bastard!! slow down?

The honest chronology is a story about art outgrowing a schedule. Bastard!! ran weekly and regularly in Shonen Jump from March 1988 to August 1989. Then the downshifts begin: to Shueisha’s quarterly Jump specials (1990–1996), back to Jump on an irregular, roughly monthly basis (1997–2000), and finally to the seinen monthly Ultra Jump (December 2000 onward). The tankobon dates tell the same story in years: volumes 1–7 in twenty months, then gaps of two, three, and finally nearly three years between volumes 26 (2009) and 27 (2012). The most recent chapter of all appeared in Ultra Jump on May 19, 2010. The series is on indefinite hiatus; it has never been cancelled or concluded.

Hagiwara’s own explanation is on the record from the production side: working alone at weekly pace, he concluded that he could produce more volumes faster, or protect the quality of the art, and chose the art; the move to slower magazines let him take back drawing duties he had delegated. In a 2023 interview he said he had been storyboarding the continuation of the current Hell arc but felt something in it was not working, that he keeps a notebook of stories set a century in the manga’s past, and that his creative energy as a writer is, if anything, increasing: he wants to finish it, and to finish it at a level that makes readers ask whether it is really Bastard!!. The audience, demonstrably, is still there: the Netflix seasons and the 2023 remake of the pilot (see the pilot page) were both made for it.