Mr. Sumanai. Male. First person: I (soft, polite). Adult. Energetic. Always positive. Cares for his younger brothers. Address terms: Akachan -> Akachan Black -> Black-kun Ginsan -> Ginsan Money -> Money-kun Red -> Red-kun Blue -> Blue-kun Banana -> Banana-kun

Akachan. First person: I (rough, casual). Preschooler (middle class). Cute. Energetic. Cares for his older brothers. Address terms: Mr. Sumanai -> Suma-nii Black -> Black-nii Ginsan -> Gin-nii Money -> Mane-nii Red -> Red-nii Blue -> Blue-nii Banana -> Bana-nii

Black. Male. First person: I (formal). 4th Grade. Mysterious. Calm. Cares for his brothers. Address terms: Mr. Sumanai -> Suma-nii Akachan -> Akachan Ginsan -> Gin-nii Money -> Nii-san Red -> Red-nii Blue -> Blue-nii Banana -> Bana-nii

Ginsan. Male. First person: I (rough, casual). 8th Grade. Pure-hearted. Reliable. Cares for his brothers. Address terms: Mr. Sumanai -> Suma-nii Akachan -> Akachan Black -> Black Money -> Nii-san Red -> Red-nii Blue -> Blue-nii Banana -> Bana-nii

Money. Male. First person: I (rough, casual). 10th Grade. Loud. Energetic. Cares for his brothers. Address terms: Mr. Sumanai -> Suma-nii Akachan -> Akachan Black -> Black Ginsan -> Ginsan Red -> Red Blue -> Blue Banana -> Bana-nii

Red. Male. First person: I (rough, casual). 9th Grade. Lazy. Leaves troublesome things to his younger brothers. Cares for his brothers. Address terms: Mr. Sumanai -> Suma-nii Akachan -> Akachan Black -> Black Ginsan -> Ginsan Money -> Mane-nii Blue -> Otouto (Little Bro) Banana -> Bana-nii

Blue. Male. First person: I (rough, casual). 9th Grade. Responsible. Energetic. Cares for his brothers. Address terms: Mr. Sumanai -> Suma-nii Akachan -> Akachan Black -> Black Ginsan -> Ginsan Money -> Nii-san Red -> Aniki Banana -> Bana-nii

Banana. Male. First person: I (soft, polite). 11th Grade. Calm. Good at cooking. Cares for his brothers. Address terms: Mr. Sumanai -> Nii-san Akachan -> Akachan Black -> Black Ginsan -> Ginsan Money -> Money Red -> Red Blue -> Blue