The Ōno Zaibatsu (大野財閥) is a wealthy and powerful family, and the family of the main female character Ōno Akira.
- Ōno no Haha - The mother of Makoto and Akira.
- Ōno Makoto - The elder daughter, a college student and was the heir to the family until she gave up her faimly dutys for being to srtict.
- Ōno Akira - The youngest daughter, a game-addicted student, and is the current heir to the family, due to her older sister giving up on her duties.
- Jīya - The butler of the Ōno Mansion, and a driver serving Akira.
- Gōda Moemi - The personal tutor of the Ōno family, wanting the daughters of the Ono family to be prepared for their future. She once tutored Makoto but decides to give up on her due to her being a rebellious child. She moved to the younger daughter Akira and is very strict with her, not wanting her to be like her sister.
|Manga (Hi Score Girl - Hi Score Girl DASH) - Anime (Season 1 - Season 2) - Timeline - Translations|
|Yaguchi Haruo - Ōno Akira - Hidaka Koharu|
|Ma-kun - Nikotamagawa Felicia - Raging Girl|
|Doi Genta - Miyao Kōtarō - Onizuka Chihiro|
|Gōda Moemi - Jīya - Numata - Ōno Makoto - Shōgakkō-sensei - Tōno Reiko - Yaguchi Namie|
|Video game characters|
|Dhalsim - Gōki - Guile - Guy - Honda - Nash - Phobos - Vega - Zangieff|
|Capcom - Koei Tecmo - Konami - Ōno Zaibatsu - Square Enix - SNK - Taito|
|Airport - Candy Store - Flower Garden - Gashadokuro Game Center - Hidaka Mart - Jōran Kōkō - Marumiya Game Center - Minami Chū - Minami Shō - Mizonokuchi - Ōno Mansion - Totsuka Shop - Yaguchi House|
|Biwa - Kawasaki - Kyōto - Los Angeles - Ōsaka|
|Arcade - Famicom - Game Boy - Super Famicom - PC Engine - PC Engine GT - PlayStation - Sega Saturn - Game Gear - Virtual Boy - Neo Geo CD|
|Final Fantasy - Final Fight - Kung-Fu - Samurai Spirits - Street Fighter - Tekken - Vampire Savior - Virtua Fighter - Yie Ar Kung-Fu - Karateka|
|"New Stranger" (OP) - "Hōkago Distraction" (ED)|
|Oshikiri Rensuke (mangaka) - Yamakawa Yoshiki (anime director) - Urahata Tatsuhiko (anime writer) - Kuwabata Michiru (anime character designer) - Shimomura Yōko (composer)|