Name: Mahiru

Age: 15

Height: 163cm

Personality: Cheerful, energetic and out-going but very, very clumsy. Loves Rena.

Name: Rena

Age: 15

Height: 154cm

Personality: A bit awkward and gets annoyed easily but also caring and kind. Tsundere.

Name: Koharu

Age: 15

Height: 155cm

Personality: Shy and quiet but empathetic and emotionally most mature out of the four.

Name: Yuzuki

Age: 16

Height: 170cm

Personality: Athletic and physically strong but can be emotionally fragile and relies on Koharu for cheer ups.