Haikyuu sibling list
Please note that I only listed the characters whose sibling count were mentioned in the guidebook. If they aren’t here, it means it was left unsaid on their profile.
Originally drafted on 31 OCT. 2022. oops! ( ・∇・)
⸻⸻MIYAGI
KARASUNO:
Hinata Shōyō: 1 little sister (Hinata Natsu)
Kageyama Tobio: 1 big sister (Kageyama Miwa)
Sawamura Daichi: 2 little sisters, 2 little brothers
Sugawara Kōshi: 1 little brother
Azumane Asahi: 1 big sister
Nishinoya Yū: 3 big sisters
Tanaka Ryūnosuke: 1 big sister (Tanaka Saeko)
Tsukishima Kei: 1 big brother (Tsukishima Akiteru)
Yamaguchi Tadashi: only-child
Ennoshita Chikara: 1 little brother
Kinoshita Hisashi: 2 little sisters
Narita Kazuhito: 1 big brother
Shimizu Kiyoko: 1 big brother
Yachi Hitoka: only-child
AOBA JOHSAI:
Oikawa Tōru: 1 big sister
Iwaizumi Hajime: only-child
Matsukawa Issei: 1 big sister, 1 little brother
Hanamaki Takahiro: 1 big sister, 1 little sister
Yahaba Shigeru: 1 big brother, 1 little brother
Watari Shinji: only-child
Kindaichi Yūtarō: 1 little brother
Kunimi Akira: 1 big sister
Kyōtani Kentarō: 1 big sister
DATE TECH:
Aone Takanobu: 1 big sister, 1 big brother
Futakuchi Kenji: 1 little sister
Koganegawa Kanji: 1 little sister
Sakunami Kōsuke: 1 little brother, 1 little sister
Kamasaki Yasushi: 1 little brother
Moniwa Kaname: 1 big brother, 1 little sister
Sasaya Takehito: 2 big sisters
Obara Yutaka: only-child
Onagawa Tarō: 2 big brothers
Fukiage Jingo: 1 big brother
SHIRATORIZAWA:
Ushijima Wakatoshi: only-child
Tendō Satori: only-child
Shirabu Kenjirō: 1 big brother, 2 little brothers
Goshiki Tsutomu: only-child
Ōhira Reon: 1 big sister, 1 little brother
Yamagata Hayato: 2 little sisters
Kawanishi Taichi: 1 big sister
Semi Eita: 1 little sister
TOKONAMI:
Ikejiri Hayato: 1 big sister
OHGIMINAMI:
Towada Yoshiki: 2 big sisters, 1 little sister, 1 little brother
KAKUGAWA:
Hyakuzawa Yūdai: 1 big sister
Komaki Yuzuru: only-child
Asamushi Kaito: 1 little brother
Minamida Taishi: 1 little brother
JOHZENJI:
Terushima Yūji: 2 big sisters
Bobata Kazuma: 1 big sister
Futamata Takeharu: 1 little sister
Higashiyama Katsumichi: only-child
Numajiri Rintarō: only-child
Īzaka Nobuyoshi: 1 little brother
Tsuchiyu Arata: 1 big sister
Misaki Hana: 2 little brothers
WAKUTANI MINAMI:
Nakashima Takeru: 1 big brother (Nakashima Isamu), 1 little sister (Nakashima Makoto), 2 little brothers (Nakashima Minoru, Nakashima Taira)
Kawatabi Shunki: 1 little sister
Shiroishi Yūki: only-child
Hanayama Kazumasa: 1 big brother, 1 little sister
Naruko Teppei: 1 little brother
Akiu kazuteru: 1 big brother
Matsushima Tsuyoshi: 1 big sister, 1 big brother
⸻⸻NATIONAL
NOHEBI:
Daishō Suguru: 1 big sister
Numai Kazuma: 1 big brother, 1 little brother
Kuguri Naoyasu: only-child
Yamaka Mika: 1 big brother
SHINZEN:
Chigaya Eikichi: 1 big brother, 1 big sister
NEKOMA:
Kozume Kenma: only-child
Kuroo Tetsurō: 1 big sister
Yaku Morisuke: 2 little brothers
Haiba Lev: 1 big sister (Haiba Alisa)
Yamamoto Taketora: 1 little sister (Yamamoto Akane)
Kai Nobuyuki: 1 big sister, 1 little brother
Fukunaga Shōhei: 1 little sister
Inuoka Sō: 2 little sisters
Shibayama Yūki: 1 little brother
Teshiro Tamahiko: 1 big brother, 1 little sister
Yamamoto Akane: 1 big brother (Yamamoto Taketora)
Haiba Alisa: 1 little brother (Haiba Lev)
FUKURŌDANI:
Bokuto Kōtarō: 2 big sisters
Akaashi Keiji: only-child
Konoha Akinori: 1 big brother, 1 little sister
Sarukui Yamato: 2 little sisters
Komi Haruki: 1 big sister, 1 big brother
Washio Tatsuki: 1 big sister
Onaga Wataru: 1 little brother
INARIZAKI:
Miya Osamu: 1 twin brother (Miya Atsumu)
Miya Atsumu: 1 twin brother (Miya Osamu)
Kita Shinsuke: 1 big sister, 1 little brother
Suna Rintarō: 1 little sister
Ojiro Aran: 1 little brother
Riseki Heisuke: only-child
Ginjima Hitoshi: only-child
Ōmimi Ren: 1 little brother, 1 little sister
Akagi Michinari: 1 big sister
KAMOMEDAI:
Hoshiumi Kōrai: 1 big brother (Hoshiumi Akitomo)
Hirugami Sachirō: 1 big brother (Hirugami Fukurō), 1 big sister (Hirugami Shōko)
Hakuba Gao: only-child
Bessho Kazuyoshi: 1 little sister
Suwa Aikichi: 2 little brothers
Nozawa Izuru: 1 big brother
Kanbayashi: only-child
TSUBAKIHARA:
Echigo Sakae: 1 big sister, 1 little brother
Maruyama Kazuki: only-child
Teradomari Motoki: 2 big brothers, 1 little brother
Himekawa Aoi: 1 little sister
MUJINAZAKA:
Kiryū Wakatsu: 1 little sister
Usuri Michiru: only-child
Unnan Keisuke: 1 big sister, 1 little sister
Mami Nozomu: 1 big brother, 1 little brother
ITACHIYAMA:
Sakusa Kiyoomi: 1 big sister, 1 big brother {see end note}
Komori Motoya: 1 big sister, 1 little sister
Iizuna Tsukasa: 1 big brother, 1 little brother
⸻⸻V. LEAGUE
HIKARI PHARMACEUTICAL RED RABBITS:
Hirugami Shōko: 1 big brother (Hirugami Fukurō), 1 little brother (Hirugami Sachirō)
Amanai Kanoka: 1 little sister
SCHWEIDEN ADLERS:
Romero Nicolas: 1 little brother (Romero Rubens)
Hirugami Fukurō: 1 little sister (Hirugami Shōko), 1 little brother (Hirugami Sachirō)
END NOTE: If you’ve seen post calling Sakusa an only-child, please know they’re technically not wrong, but also not right. The guidebook does notes him down as an only-child, however it was later on rectified by official Shueisha / Shonen Jump online.