Mysterious Disappearances

• Ja Kanji — 怪異と乙女と神隠し • Ja Romaji — Kaii to Otome to Kamikakushi • Genre — * Comedy drama • Mystery • Supernatural

• Type — manga • Author — Nujima • Publisher — Shogakukan • Magazine — Yawaraka Spirits • First — October 18, 2019 • Volumes — 10

• Type — tv series • Director — Tomomi Mochizuki • Producer — * Joutarou Ishigami • Reiko Sasaki • Shousei Itou • Yuu Okazaki • Aya Iizuka • Writer — Tomomi Mochizuki • Music — * Kayo Konishi • Yukio Kondō • Studio — Zero-G • Licensee — Crunchyroll • Network — AT-X, Tokyo MX, BS NTV, Kansai TV • First — April 10, 2024 • Last — June 26, 2024 • Episodes — 12

• Portal — yes Mysteries, Maidens and Mysterious Disappearances is a Japanese manga series written and illustrated by Nujima. It has been serialized on Shogakukan's Yawaraka Spirits website since October 2019. An anime television series adaptation produced by Zero-G aired from April to June 2024.

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.

• Sumireko Ogawa • Fairouz Ai • 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—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. • Ren Adashino • Daiki Yamashita • 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. • Oto Adashino • Eri Yukimura • Manami Uname • Yui Horie • Shizuku Hayami • Rie Takahashi • Nodoka Ametsuchi • Saya Aizawa • Jikū no Ossan • Yūya Uchida • Himeuo Yorumun • Naomi Ōzora • Station Attendant • Masako Nozawa

Written by and illustrated by Nujima, Mysterious Disappearances started on Shogakukan's Yawaraka Spirits website on October 18, 2019. Shogakukan has collected its chapters into individual tankōbon volumes. The first volume was released on April 10, 2020. As of December 12, 2025, ten volumes have been released. In July 2023, Seven Seas Entertainment announced that it licensed the series for English publication, with the first volume released in May 2024.

An anime television series adaptation was announced on January 12, 2023. It is produced by Zero-G, and written and directed by Tomomi Mochizuki, 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, and the ending theme song is 4="Scarlet-Dyed Heart", performed by Nonoka Ōbuchi. Crunchyroll streamed the series worldwide excluding Japan and China.

Mysterious Disappearances is associated with Japan.