Celebrating the twentieth anniversary of Nisio's debut in 2022, the tenth volume of the series was released on February 8, 2023.

An eight-episode original video animation series adaptation of the first volume by Shaft was released between October 2016 and September 2017.

Made mainly of wood, three stories, four-mat room with horrible sound insulation, bare light bulb, shared toilet, no bath; the rent is 10,000 yen per month, though.

Seven organizations that hold control of the world is under Kunagisa, it consists of "Ichigai(壱外)", "Nishiori(壱弐栞)", "Sanzaka(参榊)", "Shikabane(肆屍)", "Gotoride(伍砦)", "Rokukase(陸枷)", and lastly "Hachikiri(捌限)".

The "Economical" world consists of five big Zaibatsu, "Akagami(赤神)", "Iigami(謂神)", "Ujigami(氏神)", "Ekagami(絵鏡 )", and "Origami(檻神)".

[70] The series has several chief animation directors: Akio Watanabe himself, Hirofumi Suzuki of Naruto fame (who worked with Shinbo on Le Portrait de Petit Cossette), and Rina Iwamoto (from CUES).

Long before the anime's announcement, Shaft had interest in producing an adaptation of the series, which character designer Akio Watanabe said was the initial work that he was contacted by studio president Mitsutoshi Kubota for.

[71] However, plans for the series were quickly scrapped, and instead Watanabe was asked to create the designs for Bakemonogatari.

[72] The Kubikiri Cycle went through a number of drafts; Tomo Kunagisa was originally intended to be the series' protagonist,[73] but during the rewriting process, Nisio Isin realized that Ii-chan had become more important.

After finally completing the novel, Nisio proceeded to write Strangulation Romanticist in three days.

[74] With Suspension High School, Nisio began consciously moving the series away from traditional mystery novel structure.