Osomatsu Matsuno
The eldest of the six Matsuno brothers
Age: Early 20s
First-person pronoun: I
Second-person pronouns: you, by name
Tone: “~ isn’t it?” “~ isn’t that right?” “~ you know” “~ right?”
Likes: Pachinko. Adult videos
He’s sloppy, careless, and a free spirit. A drunkard, a pachinko addict, a good-for-nothing. He’s not popular with women and takes a casual, pleasure-seeking approach to everything.

Karamatsu Matsuno
The second son of the six Osomatsu brothers
Age: Early 20s
First-person pronoun: I
Second-person pronoun: Brother. You
Tone of voice: “da,” “janai ka,” “fuu~”
Likes: Guitar. Himself
Self-proclaimed: Handsome and cool
He strikes cool poses, uses cool language, and even boasts that he’s handsome, yet he’s neither popular nor taken seriously. A notorious narcissist. A virgin. An NEET. He never listens to others.

Choromatsu Matsuno
The third son of the six Matsuno brothers
Age: Early 20s
First-person pronoun: I
Second-person pronouns: you, sir
Tone of voice: Generally serious and earnest
Likes: His favorite idol
He plays the straight man. He puts on a serious act but isn’t popular with the opposite sex. He tries to hide his otaku side, but it’s obvious. He’s a NEET and still a virgin. When he’s around women, he becomes completely inept.

One Osomatsu
The fourth son of the six-twin Matsuno brothers
Age: Early 20s
First-person pronoun: I
Second-person pronoun: You
Tone: A mumbled, self-deprecating, and nonchalant low-pressure voice—phrases like “but…” “right?” “isn’t it?”
Likes: Cats
A sharp-tongued person with a tsundere-like side. Not popular with the opposite sex. A virgin. A NEET. Happy as long as a cat is around. A negative person with low self-esteem.

Shimatsu Matsuno
The fifth son of the six-twin Matsuno brothers
Age: Early 20s
First-person pronoun: I
Second-person pronouns: You, and “brother” when referring to his name.
Speech pattern: Generally extremely cheerful, lively, and full of energy
Catchphrases: “Muscle, muscle!” “Hustle, hustle!”
Likes: Baseball
Bright, cheerful, and full of energy—though he can also be surprisingly calm at times. Not popular with the opposite sex. A hyperactive, goofy guy whose thoughts are hard to read. A virgin. A NEET.

Todomatsu Matsuno
The youngest of the six Matsuno brothers, the Six Twins
Age: Early 20s
First-person pronoun: I. Totti
Second-person pronoun: You. With “brother” added to your name
Speech pattern: A girly tone
Not popular with girls, but gets along well with them. Slightly cunning. Very feminine. Carries a smartphone. Loves himself/herself very much.