Yuyushiki

• Name — Yuyushiki • Ja Kanji — ゆゆ式 • Genre — Comedy, slice of life

• Type — manga • Author — Komata Mikami • Publisher — Houbunsha • Magazine — Manga Time Kirara • First — April 2008 • Volumes — 15

• Type — tv series • Director — Kaori • Writer — Natsuko Takahashi • Music — Asuka Sakai • Studio — Kinema Citrus • Network — Tokyo MX, SUN-TV, KBS, tvk, TV Aichi, AT-X, BS11, Anime Network • First — April 9, 2013 • Last — June 26, 2013 • Episodes — 12 • Episode List — #Episode list

• Title — Annoying and Being Annoyed • Type — ova • Director — Kaori • Writer — Natsuko Takahashi • Music — Asuka Sakai • Studio — Kinema Citrus • Released — February 22, 2017 Yuyushiki is a Japanese 4-panel manga series written and illustrated by Komata Mikami, which began serialization in Houbunsha's Manga Time Kirara magazine from April 2008 issue. An anime television adaptation by Kinema Citrus aired in Japan between April and June 2013. An original video animation was released on February 22, 2017. The series' name is derived from the term.

The series follows the daily lives of three high school girls: the intelligent but childish Yuzuko, the kind but airheaded Yukari, and the mature and easily irritated Yui, who are all part of their school's Data Processing Club. As the girls spend their days having meaningless discussions, they occasionally come up with topics to research while in their clubroom.

• Yuzuko Nonohara • Rumi Ōkubo • The first member of the Data Processing Club. Her nature is usually innocent, but will sometimes break out into outrageous bouts. Despite her dimwitted demeanour and crazy ideas, she is actually quite intelligent when it comes to the studies. • Yukari Hinata • Risa Taneda • The second member of the Data Processing Club and its president. A generally light headed girl who will often copy Yuzuko's antics if she finds them amusing. She comes from a rich family and was friends with Yui in elementary school. • Yui Ichii • Minami Tsuda • The third member of the Data Processing Club. A generally serious girl who often serves as the straight person to the antics of Yuzuko and Yukari, who often like to tease her. • Yoriko Matsumoto • Yui Horie • The girls' homeroom teacher and advisor of the Data Processing Club. She is often called Okā-san by her students due to her generally kind nature. • Chiho Aikawa • Ai Kayano • A classmate of the girls and the class president. She is a quiet girl who admires Yui a lot and wants to become friends with her, but is usually intimidated by Yuzuko and Yukari's antics. • Kei Okano • Megumi Han • A classmate of the girls and Chiho's friend. She is quite fond of Chiho and is often cold towards Yui for allegedly taking Chiho away from her. • Fumi Hasegawa • Mana Shimizu • A classmate of the girls and Chiho and Kei's friend. She is aware of Kei's fondness for Chiho and often teases her about it.

The original manga by Komata Mikami began serialization in Houbunsha's Manga Time Kirara magazine from April 2008. The first tankōbon volume of the manga was released March 26, 2009, and fifteen volumes have been published as of September 27, 2025.

The anime television adaptation is produced by Kinema Citrus and is directed by Kaori. Series composition is done by Natsuko Takahashi and character design by Hisayuki Tabata. The series aired between April 9 and June 26, 2013, and was simulcast with by Crunchyroll. The opening theme is "One Two!" by Rumi Ōkubo, Risa Taneda and Minami Tsuda, while the ending theme is "Affection" by Mayumi Morinaga. Sentai Filmworks licensed the series in North America and released it on subtitled DVD on July 1, 2014. An original video animation episode was released in Japan on February 22, 2017. The opening and ending themes respectively are "Kirameki! no Hi" and "Aozora no Tsukurikata", both performed by Ōkubo, Tsuda, and Taneda. In March 17, 2026, the anime debuted on the HIDIVE platform, with Comic Book stating that the series had yet to be "renewed for a second season".

Characters from the series appear alongside other Manga Time Kirara characters in the 2017 mobile RPG, Kirara Fantasia.