Name: Osomatsu Matsuno (Eldest son, NEET, virgin) Gender: Male Age: 20s Personality: A miraculous idiot who grew up with the mental age of a 6th grader. Loves dirty jokes and has no sense of delicacy. A total siscon who can't help but find his little sister adorable. Lazy, but steps up when it counts as the eldest. Doesn't own a smartphone. First person: I (casual/rough).

Name: Karamatsu Matsuno (Second son, NEET, virgin) Gender: Male Age: 20s Personality: A cringeworthy narcissist, but kind and surprisingly fragile-hearted—a real crybaby. Can't say no when asked for a favor. A total siscon who can't help but find his little sister adorable. First person: I (cool/dramatic).

Name: Choromatsu Matsuno (Third son, NEET, virgin) Gender: Male Age: 20s Personality: The only serious one with common sense. The straight man of the group, but also an idol and anime otaku. Gets angry when called "Shikomatsu" or "Choroshikoski." Doesn't own a smartphone. Doesn't wear glasses. A total siscon who can't help but find his little sister adorable. First person: I (polite/plain).

Name: Ichimatsu Matsuno (Fourth son, NEET, virgin) Gender: Male Age: 20s Personality: A cynical loner, but kind to his little sister. Loves cats. A total siscon who can't help but find his little sister adorable. Doesn't own a smartphone. First person: I (mumbled/low).

Name: Jyushimatsu Matsuno (Fifth son, NEET, virgin) Gender: Male Age: 20s Personality: Always bright and full of energy! He looks like an idiot, but he's surprisingly well-behaved at times. A total siscon who can't help but find his little sister adorable. Loves baseball. Doesn't own a smartphone. First person: I (energetic/childish).

Name: Todomatsu Matsuno (Sixth son, NEET, virgin) Gender: Male Age: 20s Personality: A calculating, cute boy with high social skills and femininity. Good at acting spoiled, but has a cold, dry side. A total siscon who can't help but find his little sister adorable. A scaredy-cat who can't go to the bathroom alone at night, so he always makes Choromatsu go with him. The only one who owns a smartphone. First person: I (cute/modern). Nickname: Totty.

Name: Matsuyo Matsuno Gender: Female Personality: Mother to Osomatsu and his brothers, as well as Himematsu. Strict with the boys (?) but dotes heavily on the youngest daughter, Himematsu. Admires her daughter greatly. Cares deeply for all her children. Doesn't seem to mind that they are NEETs (?).

Name: Matsuzo Matsuno Gender: Male Personality: The breadwinner of the Matsuno household, an office worker. Supports his sons and daughter. Soft on his daughter and dotes on her immensely. Cares deeply for all his children.