Cinderella Nine

• Name — Cinderella Nine • Ja Kanji — 八月のシンデレラナイン • Ja Romaji — Hachigatsu no Shinderera Nain • Genre — Sports (Baseball, Cricket)

• Publisher — Akatsuki • Genre — Simulation, Social network game • Platforms — iOS, Android • Released — June 27, 2017

• Type — manga • Title — Hachi Nai Gaiden: Senryoku Gai! Katato-chan • Author — Bkub Okawa • Publisher — Kadokawa Shoten • First — May 2017 • Last — June 2017

• Type — serial novel • Title — Hachigatsu no Cinderella Nine ～Before Summer～ • Publisher — Kadokawa

• Type — light novel • Title — Hachigatsu no Cinderella Nine Kitakaze ni Yureru Himawari • Author — Akatsuki • Illustrator — Akatsuki, Chioru Katase • Publisher — Enterbrain • Imprint — Famitsu Bunko • Published — April 28, 2018

• Type — ona • Title — Katato the Animation • First — May 2017 • Last — June 2017 • Episodes — 4

• Type — tv series • Director — Susumu Kudo • Writer — Jin Tanaka • Music — Takahiro Obata • Studio — TMS Entertainment • Licensee — * Crunchyroll (streaming) • Network — TV Tokyo, TVA, TVO, BS TV Tokyo, AT-X • First — April 7, 2019 • Last — July 7, 2019 • Episodes — 12 • Episode List — #Anime

• Type — manga • Title — Hachigatsu no Cinderella Nine S • Author — Kōichirō Hoshino • Publisher — Akita Shoten • Imprint — Shōnen Champion Comics • Magazine — Weekly Shōnen Champion (August 19, 2021–March 10, 2022) Manga Cross (March 17, 2022–May 17, 2023) • First — August 19, 2021 • Last — May 17, 2023 • Volumes — 5 Hachigatsu no Shinderera Nain is a Japanese free-to-play mobile video game for iOS and Android published by Akatsuki and Kadokawa. It was released in Japan on June 27, 2017, and ended its service on December 17, 2024. A four-panel comedy spin-off manga series by Bkub Okawa titled Hachi Nai Gaiden: Senryoku Gai! Katato-chan and a novelization titled Hachigatsu no Cinderella Nine ～Before Summer～ are being serialized on the game's official website. A 4-episode original net animation adaptation of the four-panel manga titled Katato the Animation was streamed between May and June 2017, and an anime television series adaptation of the original game by TMS Entertainment aired from April 7 to July 7, 2019.

Tsubasa Arihara, an energetic student passionate about baseball, announces that she is forming a baseball club during the school entrance ceremony. Having been part of her junior high school's baseball team, she was disappointed to learn that her new school did not have one, leading her to start a team to continue her dreams. Despite initial struggles, she is ultimately able to form a team, with many girls joining, each with their own quirks and connections to the sport.

• Tsubasa Arihara • Nozomi Nishida • Tsubasa is a spirited girl who has just enrolled at Satogahama Municipal High School. She founds the girls' baseball team and seeks to make friends and have them join. She is optimistic and hard to get down. In the anime, she primarily plays shortstop. She bats and throws right-handed and wears number 6. • Ryō Shinonome • Reina Kondō • An old rival of Tsubasa's. She aims to go pro and at first rejects the team for being largely inexperienced, claiming that Tsubasa is not taking the game seriously by playing with them instead of players of similar skill. In the anime, she primarily plays third base. She bats and throws right-handed and wears number 5. • Yūki Nozaki • Saki Minami • A tall, unsure girl who is at first hesitant to try team sports after turning out to be unsuccessful at basketball and feeling that she let her team down. Yuuki changes her mind and joins the baseball team after seeing how everyone is supportive and refuses to judge one another's failures. In the anime, she is a first baseman and relief pitcher. She bats and throws left-handed and wears number 3. • Tomoe Kawakita • Honoka Inoue • Tsubasa's best friend, whom she calls Tomocchi. The sensible Tomoe plays the straight man to Tsubasa's less grounded antics. In the anime, she is the team's back-up infielder and first base coach. She bats and throws right-handed and wears number 10. • Akane Ukita • Yumiri Hanamori • A shy girl who wears a cat-eared hooded jacket and speaks in the third person. Akane is untalented at baseball, but quickly improves as she tries her best. In the anime, she is the team's back-up outfielder and third base coach. She bats left-handed and throws right-handed and wears number 11. • Waka Suzuki • Yūbi Midorikawa • A tsundere girl who is talented at observation and baseball strategy, but must be convinced to actually play after being let down in childhood. Her supportive brother is part of a prestigious university baseball team. In the anime, she is the team's catcher. She bats and throws right-handed and wears number 2. • Ayaka Nakano • Yurika Takagi • A budding reporter who insists on writing stories for the school newspaper, despite the school not actually having one. Peppers "nya" into her speech; the official subtitles change this to cat puns. In the anime, she is the team's center fielder. She bats and throws left-handed and wears number 8. • Yoshimi Iwaki • Nanami Yamashita • An overdramatic, hot-blooded second-year from the cheerleading squad. She's noted for not being able to turn down a request. In the anime, she primarily plays left-field. She bats left-handed and throws right-handed and wears number 7. • Aoi Asada • Rika Tachibana • A second-year with little in the way of tact or personal space and a talent for detail. Aoi ends her sentences with the particle "no da" or "nano da." Extremely good at rock, paper, scissors she is initially the team's third baseman, but later moves to second base. She bats and throws right-handed and wears number 4. • Maiko Kurashiki • Yurika Endō (game), Iori Saeki (anime) • A quiet second-year girl and Yūki's classmate in elementary school who excels in various sports like dodgeball. She often has run-ins with the police as she leaves her house at night to separate herself from her estranged parents. In the anime, she becomes the team's starting pitcher. When she is not pitching, she plays first base. She bats and throws right-handed and wears number 1. • Kana Tsukumo • Haruka Shiraishi • A member of the student council overseeing the athletic clubs. In the anime, she is the team's starting right-fielder. She bats and throws right-handed and wears number 9. • Maria Hase • Sarara Yashima • A quiet girl who is occasionally seen interacting with Ayaka and watching the rest of the team from afar. • Shiho Nōmi • Mewhan • An anime-original character; she is the student council president. • Momoko Kakehashi • Eriko Nakamura • A teacher at Satogahama High School and the team's adviser.

The mobile game published by Akatsuki and Kadokawa was released for iOS and Android on June 27, 2017. An animated trailer by A-1 Pictures was streamed prior to the game's publication on July 31, 2016. The game is free-to-play.

A four-panel comedy spin-off manga series by Bkub Okawa titled Hachi Nai Gaiden: Senryoku Gai! Katato-chan is being serialized on the game's official website alongside the novelization. As of November 5, 2019, seventy-two chapters of the manga have been released so far. Another spin-off manga, titled Hachigatsu no Cinderella Nine S, written and illustrated by Kōichirō Hoshino began serialization in Akita Shoten's Weekly Shōnen Champion on August 19, 2021. In March 2022, the manga was transferred to the Manga Cross website. The series will end with the release of its fifth volume on August 8, 2023.

A novelization titled Hachigatsu no Cinderella Nine: Before Summer is also being serialized on the official website alongside the four-panel manga. Twelve chapters of the novel have been released so far.

An original net animation adaptation of the four-panel manga titled Katato the Animation was streamed on the game's official website and YouTube channel between May and June 2017 with four short episodes. Mako Morino voiced the characters in the anime.

On July 30, 2018, the official Twitter account of the original game announced that an anime television series adaptation of the game would be produced. The staff and release date for the series were announced on October 25, 2018. The series is directed by Susumu Kudo and animated by TMS Entertainment, with Jin Tanaka writing the scripts and Takayuki Noguchi designing the characters. The cast reprised their roles from the game. It aired from April 7 to July 7, 2019, on TV Tokyo and other channels. The broadcast of episode 8 was delayed for 3 weeks, due to coverage of the 2019 French Open. The game will end service on December 17, 2024, with the game being updated to a limited offline version. The opening theme is "Etude" performed by Mewhan, while the ending theme is a cover of Noriyuki Makihara's song "Donna Toki mo", performed by Nozomi Nishida, Reina Kondō, Saki Minami, and Honoka Inoue under their respective character names. Crunchyroll streamed the series. Sentai Filmworks licensed the show in December 2019 for release across various regions including the Americas, Europe, and Oceania.