is a Japanese

manga are comics or graphic novels originating from Japan. Most manga conform to a style developed in Japan in the late 19th century, and the form has a long history in earlier Japanese art. The term is used in Japan to refer to both comics ...

series written and illustrated by . It has been serialized on

Shogakukan is a Japanese publisher of comics, magazines, light novels, dictionaries, literature, non-fiction, home media, and other media in Japan. Shogakukan founded Shueisha, which also founded Hakusensha. These are three separate companies, but ...

's ' website since October 2019. An

anime is a Traditional animation, hand-drawn and computer animation, computer-generated animation originating from Japan. Outside Japan and in English, ''anime'' refers specifically to animation produced in Japan. However, , in Japan and in Ja ...

television series adaptation produced by

Zero-G Weightlessness is the complete or near-complete absence of the sensation of weight, i.e., zero apparent weight. It is also termed zero g-force, or zero-g (named after the g-force) or, incorrectly, zero gravity. Weight is a measurement of the fo ...

aired from April to June 2024.

Plot

Sumireko Ogawa is a bookstore clerk who dreamed of writing novels in her youth. She teams up with her coworker, Ren Adashino, who is hiding secrets of his own, to investigate supernatural phenomena happening in the city.

Characters

; : :A 28-year-old woman, first discovered her passion for writing as a teenager but struggled to maintain her creative drive as she grew older. While working at a bookstore, she stumbled upon a mysterious

grimoire A grimoire () (also known as a book of spells, magic book, or a spellbook) is a textbook of magic, typically including instructions on how to create magical objects like talismans and amulets, how to perform magical spells, charms, and divin ...

—one that accidentally transformed her back into a child. Without Ren's timely intervention, the magic would have killed her. Now, she assists Ren and Oto in solving supernatural mysteries across Tokyo. Having absorbed some of the grimoire's power, Sumireko can freely shift between her adult and child forms. ; : :Sumireko's co-worker at the bookstore. Taking on the appearance of a human teen, he actually is a being from outside Earth, and believes that solving enough supernatural mysteries and collecting the cursed objects behind them will be enough to buy a ticket home for himself and his sister. ; : ; : ; : ; : ; : ; : ; :

Media

Manga

Written by and illustrated by , ''Mysterious Disappearances'' started on

's ' website on October 18, 2019. Shogakukan has collected its chapters into individual volumes. The first volume was released on April 10, 2020. As of April 11, 2025, nine volumes have been released. In July 2023,

Seven Seas Entertainment Seven Seas Entertainment is an American publishing company located in Los Angeles, California. It was originally dedicated to the publication of original English-language manga, but now publishes licensed manga and light novels from Japan, as w ...

announced that it licensed the series for English publication, with the first volume released in May 2024.

Volumes

Anime

television series adaptation was announced on January 12, 2023. It is produced by

, and written and directed by

Tomomi Mochizuki , sometimes incorrectly spelled as Tomomichi Mochizuki, is a Japanese storyboard artist, screenwriter, and director, known for having collaborated with leading animation studios such as Studio Ghibli, Nippon Animation, Pierrot, and Sunrise. He som ...

, with character designs handled by Takuya Tani, and music composed by Kayo Konishi and Yukio Kondō. The series aired from April 10 to June 26, 2024, on AT-X and other networks. The opening theme song is "Hazard Symbol", performed by Yuyu, while the ending theme song is , performed by Nonoka Ōbuchi.

Crunchyroll Crunchyroll is an American Video on demand#Subscription models, subscription video on-demand Over-the-top media service, over-the-top Streaming media, streaming service owned by Sony, Sony Group Corporation. The service primarily distributes fi ...

streamed the series worldwide excluding Japan and China.

Episodes

Reception

In 2020, the manga was one of the nominees for the sixth

Next Manga Award The is an annual award for manga series presented by Kadokawa Corporation's '' Da Vinci'' magazine and Niconico streaming website. It is divided into two categories: one for print manga, and one for web manga. Overview The award was originally ...

s in the web category. The manga was recommended in 2021 by manga artist

Akihito Tsukushi Shigeya Suzuki (鈴木茂也, ''Suzuki Shigeya,'' born May 5, 1979), more commonly known under his pseudonym Akihito Tsukushi (つくしあきひと, ''Tsukushi Akihito''), is a Japanese illustrator, manga artist, and designer from Sagamihara, Ka ...

Notes

References

External links

* * * {{Zero-G (studio) 2019 webcomic debuts Anime series based on manga Comedy-drama anime and manga Crunchyroll anime Japanese webcomics Mystery anime and manga Seinen manga Seven Seas Entertainment titles Shogakukan manga Supernatural anime and manga Webcomics in print Zero-G (studio)