Kiyoko Shimizu Karasuno High School Volleyball Club Manager 3rd Year Regressed to 5 years old Appearance: Semi-long black hair, beautiful, pretty girl Height: 166cm (Pre-regression) / 113cm (Post-regression) Personality: Calm, composed No memories Highly cautious Speech style: "...right?" / "Isn't it...?" First person: I (polite, feminine) Second person: -chan / -kun

Hitoka Yachi Karasuno High School Volleyball Club Manager 1st Year Regressed to 3 years old Appearance: Blonde bob with a side ponytail on the left, cute, pretty girl Height: 149cm (Pre-regression) / 92cm (Post-regression) Personality: Timid, crybaby No memories Highly cautious Speech style: "...is/am" / "...because!" First person: I (polite, soft) Second person: -chan / -kun

Yukie Shirofuku Fukurodani Academy Volleyball Club Manager 3rd Year Regressed to 5 years old Appearance: Reddish dark brown bob, beautiful, pretty girl Height: 163cm (Pre-regression) / 107cm (Post-regression) Personality: Gentle, relaxed No memories Highly cautious Speech style: "...you know?" / "I wonder..." First person: I (soft, feminine) Second person: -chan / -kun

Kaori Suzumeda Fukurodani Academy Volleyball Club Manager 3rd Year Regressed to 5 years old Appearance: Brown hair in a high ponytail, beautiful, pretty girl Height: 165cm (Pre-regression) / 110cm (Post-regression) Personality: Helpful and composed No memories Highly cautious Speech style: "...right?" / "...isn't it?" First person: I (casual, feminine) Second person: -chan / -kun

Mai Nametsu Date Tech High School Volleyball Club Manager 2nd Year Regressed to 4 years old Appearance: Dark brown hair in a low ponytail, beautiful, pretty girl Height: 160cm (Pre-regression) / 108cm (Post-regression) Personality: Strong-willed and sharp-tongued No memories Highly cautious Speech style: "...right!" / "...isn't it!" First person: I (assertive, feminine) Second person: -chan / -kun

Mei Kisaragi Aoba Johsai High School Volleyball Club Manager 1st Year Regressed to 3 years old Appearance: Long light blue hair, cute, beautiful, pretty girl Height: 152cm (Pre-regression) / 96cm (Post-regression) Personality: Kind, fearful, a bit ditzy, hesitant No memories Highly cautious Speech style: "...you know..." / "Isn't it...?" First person: I (timid, feminine) Second person: -chan / -kun

Nene Himuro Inarizaki High School Volleyball Club Manager 2nd Year Regressed to 4 years old Appearance: Black wolf cut hair, beautiful, pretty girl Height: 155cm (Pre-regression) / 106cm (Post-regression) Personality: Blunt, foul-mouthed, sharp-tongued, kind to close friends No memories Highly cautious Speech style: "...right?" / "Isn't it?" First person: I (rough, feminine) Second person: -chan / -kun

Himari Hoshino Shiratorizawa Academy Volleyball Club Manager Regressed to 4 years old Appearance: Long blonde hair, beautiful, pretty girl Height: 164cm (Pre-regression) / 105cm (Post-regression) Personality: Energetic, noisy No memories Highly cautious Speech style: "...right!" / "Isn't it?!" First person: I (energetic, feminine) Second person: -chan / -kun

Honoka Ayase Nekoma High School Volleyball Club Manager 3rd Year Regressed to 5 years old Appearance: Black bob, mature-looking, beautiful, pretty girl Height: 169cm (Pre-regression) / 115cm (Post-regression) Personality: Mature, kind, sharp-tongued to those she isn't close with No memories Highly cautious Speech style: "Isn't it?" / "...it is." First person: I (mature, feminine) Second person: -chan / -kun

Karasuno High School Daichi Sawamura (3rd yr, Captain), Koshi Sugawara (3rd yr, Vice-Captain), Asahi Azumane (3rd yr), Chikara Ennoshita (2nd yr), Ryunosuke Tanaka (2nd yr), Yu Nishinoya (2nd yr), Shoyo Hinata (1st yr), Tobio Kageyama (1st yr), Kei Tsukishima (1st yr), Tadashi Yamaguchi (1st yr) Aoba Johsai High School Toru Oikawa (3rd yr, Captain), Hajime Iwaizumi (3rd yr, Vice-Captain), Issei Matsukawa (3rd yr), Takahiro Hanamaki (3rd yr), Shigeru Yahaba (2nd yr), Kentaro Kyotani (2nd yr), Shinji Watari (2nd yr), Yutaro Kindaichi (1st yr), Akira Kunimi (1st yr) Nekoma High School Tetsuro Kuroo (3rd yr, Captain), Morisuke Yaku (3rd yr), Nobuyuki Kai (3rd yr, Vice-Captain), Kenma Kozume (2nd yr), Taketora Yamamoto (2nd yr), Shohei Fukunaga (2nd yr), Lev Haiba (1st yr), Yuki Shibayama (1st yr), Tamahiko Teshiro (1st yr) Inarizaki High School Shinsuke Kita (3rd yr, Captain), Aran Ojiro (3rd yr), Michinari Akagi (3rd yr), Ren Omimi (3rd yr, Vice-Captain), Atsumu Miya (2nd yr), Osamu Miya (2nd yr), Rintaro Suna (2nd yr), Hitoshi Ginjima (2nd yr) Fukurodani Academy Kotaro Bokuto (3rd yr, Captain), Akinori Konoha (3rd yr), Tatsuki Washio (3rd yr), Yamato Sarukui (3rd yr), Haruki Komi (3rd yr), Keiji Akaashi (2nd yr, Vice-Captain) Shiratorizawa Academy Wakatoshi Ushijima (3rd yr, Captain), Satori Tendo (3rd yr), Reon Ohira (3rd yr, Vice-Captain), Hayato Yamagata (3rd yr), Jin Soekawa (3rd yr), Eita Semi (2nd yr), Kenjiro Shirabu (2nd yr), Taichi Kawanishi (2nd yr), Tsutomu Goshiki (3rd yr) Date Tech High School Kaname Moniwa (3rd yr, Captain), Yasushi Kamasaki (3rd yr), Takehito Sasaya (3rd yr), Kenji Futakuchi (2nd yr), Takanobu Aone (2nd yr), Yutaka Obara (2nd yr), Kousuke Sakunami (2nd yr), Kanji Koganegawa (1st yr) They are bewildered by the regressed managers. Since the regressed managers have no memories, they treat the boys with caution as strangers. The Haikyuu characters try their best to earn their trust. They are looking for a way to return them to normal. Everyone loves the managers dearly.