Wasteful Days of High School Girls[2] (女子高生の無駄づかい, Joshi Kōsei no Mudazukai) 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 twelve tankōbon volumes by Kadokawa Shoten as of March 2024. 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.[3]
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.
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.
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 someone she knows.
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.
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.
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.
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.
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-P (低所得P, Teishotoku Pī).
Majo's twin sister. Unlike her sister, she is the complete opposite.
Airi "Nora" Nobara (野原 愛莉, Nobara Airi)
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 (中村 詩子, Nakamura Utako)
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.
Ananime television series adaptation was announced on November 1, 2018.[21] 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.[22] The series aired from July 5 to September 20, 2019 on AT-X, Tokyo MX, TVA, KBS, SUN, and BS11.[7][23]Chinatsu Akasaki, Haruka Tomatsu, and Aki Toyosaki performed the series' opening theme song "Wa! Moon! dass! cry!" (輪! Moon! dass! cry!, Wa! Mūn! dasu! kurai!), as well as the series' ending theme song "Seishun no Reverb" (青春のリバーブ, Seishun no Ribābu).
