Wasteful Days of High School Girls

• Name — Wasteful Days of High School Girls • Ja Kanji — 女子高生の無駄づかい • Ja Romaji — Joshi Kōsei no Mudazukai • Genre — Comedy

• Type — manga • Author — Bino • Publisher — Kadokawa Shoten • Imprint — Kadokawa Comics Ace • Magazine — * Niconico Seiga • Comic Newtype • pixiv Comic • First — 2014 • Volumes — 16

• Type — tv series • Director — Takeo Takahashi (Chief) Hijiri Sanpei • Writer — Masahiro Yokotani • Music — Tomoki Kikuya • Studio — Passione • Network — AT-X, Tokyo MX, TVA, KBS, SUN, BS11 • First — July 5, 2019 • Last — September 20, 2019 • Episodes — 12

• Type — drama • Director — Daisuke Yamamoto Ken Higurashi Ryō Nakajima Kōji Hora • Writer — Shigenori Tanabe Kōichi Yajima Takashi Tsunoda Yuri Yamada Kei Andō Shinya Tamada • Music — Natsumi Tabuchi Hanae Nakamura • Network — TV Asahi • First — January 24, 2020 • Last — March 6, 2020 • Episodes — 7 Wasteful Days of High School Girls is a Japanese manga series by Bino, serialized online via Niconico Seiga, Comic Newtype, and pixiv Comic websites since 2014. It has been collected in sixteen tankōbon volumes by Kadokawa Shoten as of June 2026. An anime television series adaptation by Passione aired from July to September 2019. A live-action series aired on TV Asahi from January to March 2020. On June 9, 2021, it was announced the manga would go on a hiatus after the author Bino gave birth to her first child. The manga resumed on December 24, 2021.

Nozomu "Baka" Tanaka, Akane "Wota" Kikuchi, and Shiori "Robo" Saginomiya are three childhood friends studying at the same high school. Nozomu, feeling bored and never being good at academics, decides to give nicknames to all their classmates, including Akane and Shiori, basing them on their respective personalities. The three and the others live out their high school lives, befriending their classmates and getting to know about their traits, interests, and quirks, seeing that there is more to school than just studying.

The names and nicknames of all the characters are puns and allusions to the central "quirk" of their personality. For example, the name Lily is a hint of a lilies, whose Japanese title "yuri" is also used to refer to lesbian love in Japanese pop culture. • Nozomu "Baka" Tanaka: • Portrayed by: Yui Okada (2020 drama) • The central character and an incredibly stupid girl. Her stupidity and annoying behavior is so remarkable that even close friends call her "Baka", which means "idiot" in Japanese. • Akane "Wota" Kikuchi: • Portrayed by: Yuri Tsunematsu (2020 drama) • An aspiring manga artist and a fan of yaoi media. It is implied that she is developing feelings for her teacher Waseda, but is in denial about it. She also listens to the music of the Vocaloid producer Teishotoku-P, who unbeknownst to her is actually Waseda. • Shiori "Robo" Saginomiya: • Portrayed by: Yurika Nakamura (2020 drama) • An emotionless smart girl who aspires to be a microbiologist. She is childhood friends with Baka and Wota, whom she met while in elementary school. She went to the same junior high school as Majime. • Saku "Loli" Momoi: • Portrayed by: Mei Hata (2020 drama) • A short girl who looks like a primary school student. Her appearance is ironically combined with her childhood innocence, which is why Loli is constantly becoming a victim of "adult" misunderstandings. She lives with her grandmother as her parents are working overseas in Germany. • Minami "Yamai" Yamamoto: • Portrayed by: Momoko Fukuchi (2020 drama) • A girl with a chunibyo personality, who dyed her hair blond. She often speaks with Waseda regarding her thoughts and plans. • Kanade "Majime" Ninomae: • Portrayed by: Nana Asakawa (2020 drama) • Tomboy-ish shy girl who is incredibly popular with others because of her masculine appearance, but she herself doesn't notice it because of her social clumsiness. Thanks to her outstanding logical thinking, Majime is incredibly talented in mathematics, but at the same time completely ignorant in ordinary human relationships. For this reason, she admires Robo incredibly, who she considers equally smart and sociable. • Hisui "Majo" Kujyō: • Portrayed by: Ayaka Imoto (2020 drama) • A student who rarely comes to school and who has an interest in the occult. She has a twin sister named Kohaku. • Lily Someya: • Portrayed by: Yui Kobayashi (2020 drama) • A popular beauty and part-Austrian student who transferred to the school. Her role in the plot is a parody of lesbian characters, although it is unclear how much this is connected with her real sexuality or just phobia for men, which for some reason affects Tanaka too. One way or another, Lily becomes one of the most popular girls of their school, although her life is often complicated due to the quirks of other characters. • Masataka "Waseda" Sawatari: • Portrayed by: Keita Machida (2020 drama) • The class's homeroom teacher. He is only attracted to female university students. He also regularly has consultations with Yamai; a running gag involves his glasses breaking when Yamai mentions something regarding her chunibyo behavior. Outside of school, he is secretly a Vocaloid producer who goes by the name Teishotoku Pī. • Rie "USB" Mikami: • Portrayed by: Nazuna Iseri (2020 drama) • Kohaku Kujyo: • Portrayed by: Noa Kita (2020 drama) • Majo's twin sister. Unlike her sister, she is the complete opposite. • Airi "Nora" Nobara • A high school girl who has poor social skills. She lives alone due to a desire to own cats, which could not be done in her parents' residence. She also works part-time as a convenience store clerk. • Utako "Hime" Nakamura • A high school girl who is the daughter of a ramen shop owner. She is known in school for keeping a cute personality, and she also posts videos about fashion online. When she was in junior high school, she was frequently bullied for having an unattractive appearance. She then met Baka, who then gave her the nickname "Hime" and helped inspire Hime's father to improve their restaurant business, which was failing at the time. • Shiikyon: • Portrayed by: Risa Naito (2020 drama) • The school's nurse on duty and fellow chunibyo of Yamai. • Pīnattsu Pī: • Portrayed by: Hikomaro (2020 drama) • Masayoshi Suzuki: • Portrayed by: Ryo Yokoyama (2020 drama)

The manga series began serialization on the Comic Newtype website in 2014. It has been collected into sixteen tankōbon volumes as of June 10, 2026.

An anime television series adaptation was announced on November 1, 2018. The series was animated by Passione and directed by Hijiri Sanpei, with Takeo Takahashi as chief director, Masahiro Yokotani handling series composition, and Sachiko Yasuda designing the characters. Tomoki Kikuya composed the music. The series aired from July 5 to September 20, 2019, on AT-X, Tokyo MX, TVA, KBS, SUN, and BS11. Chinatsu Akasaki, Haruka Tomatsu, and Aki Toyosaki performed the series' opening theme song "Wa! Moon! dass! cry!", as well as the series' ending theme song "Seishun no Reverb".

A live-action drama series premiered on TV Asahi on January 24, 2020. The series' theme song is "Starting Over" by Little Glee Monster. • No. Number — Title — Original air date