Nana Osaki

Voiced by: Romi Park (JP), Anna Tsuchiya (JP Singing voice), Rebecca Shoichet (EN), Portrayed by: Mika Nakashima

• Blue Oni: to Hachi's Red
• Even the Girls Want Her
• Friendless Back Ground
• Missing Mom
• Perky Punk
• Raised by her Grandma
• Tall, Dark and Bishoujo
• Tomboy: To Hachi's girly girl

Nana Komatsu

Voiced by: KAORI (JP), Kelly Sheridan (EN), Portrayed by: Aoi Miyazawa (Film 1), Yui Ichikawa (Film 2)

• Genki Girl
• Girly Girl: To Nana's tomboy
• Looking for Love in All the Wrong Places
• Love at First Sight: If only Junko had a dime for everytime Hachi "fell in love".
  Junko: Nana, I get the idea you came here to get yourself a boyfriend, right?
• Nice Girl
• Only Known by Their Nickname: She's populary known as "Hachi" in and out of universe.
• Red Oni: To Nana and Junko's blue
• Smitten Teenage Girl: In her teens
• Team Mom
• Who's Your Daddy?: It's between Takumi and Nobu.

Nobuo Terashima

Voiced by: Tomokazu Seki (JP), Matthew Erickson (EN)

• Nice Guy

Shinichi Okazaki

Voiced by: Akira Ishida (JP), David A Kaye (EN)

• Even the Guys Want Him
• Freaky Fashion, Mild Mind
• Prostitute with a Heart of Gold
• Pink Girl, Blue Boy: The blue to Layla's Pink.
• Younger than They Look

Yasushi Takagi

Voiced by: Yoshihisa Kawahara (JP), Brian Drummond (EN)

• Bald of Awesome
• Cool Shades
• Team Mom

Ren Honjo

Voiced by: Hidenobu Kiuchi (JP), Samuel Vincent (EN)

• Killed Off for Real

Layla Serizawa

Voiced by: Aya Hirano (JP), Olivia Lufkin (JP Singing Voice), Ashleigh Ball (EN), Portrayed by: Yuna Ito

• Hair Color Dissonance: Pink? Light brown? Vaguely Blonde?
• Pink Girl, Blue Boy: The pink to Shin's Blue....if you can call her hair pink.
• Spell My Name With an L...or R: Her name is often romanized as "Reira" but she's named after the song "Layla".

Takumi Ichinose

Voiced by: Toshiyuki Morikawa (JP), Andrew Francis (EN)

• Jerkass: His most defining trait.
• Like Brother and Sister: How he views his relationship with Layla.
• Your Cheating Heart

Naoki Fujieda

Voiced by: Anri Katsu (JP), Adrian Petriw (EN)