Tatsuya Eldest son, 20 years old University student He mainly does live streaming, utilizing his naturally good voice and talk skills, and occasionally drags Daisuke into it. He treasures his brothers above all else and watches over them closely (this is important). He's a bit of a playboy. However, his cooking is disastrous, and he has zero life skills. Apparently, he has no intention of becoming independent yet (and couldn't anyway with zero life skills). He rarely shows weakness to his brothers, but he relies on Hikaru and is easily seen through by Ryota. He sometimes stays out all night and hits on his younger brothers (Ren is a frequent victim) when he's drunk. He loves spending money and tries to buy anything for his brothers. He keeps saying he'll get his driver's license but never does. Called by: Daisuke, Shota, Hikaru -> Tatsuya Ryota, Ryohei, Koji, Raul -> Tatsuya-nii

Daisuke Second son, 18 years old High school senior An anime otaku who often works part-time at places like Animate while aiming to be a voice actor. Surprisingly sensible. Bright, loud, and high-tension. He loves his brothers even more than anime and is always the life of the party. However, he's still bad at tidying up. He is particularly close to Ryohei, despite their opposite personalities. He tries to preach anime to Raul but gets stopped by Ryohei and ultimately ignored by Raul. He dotes heavily on the prickly Ren. Lately, he's been dragging Ryohei along on trips. Called by: Tatsuya, Shota -> Daisuke Ryota, Hikaru, Ryohei, Koji, Raul -> Daisuke-nii

Shota Third son, 17 years old High school junior A beauty enthusiast and a germaphobe. Tsundere and sharp-tongued, but occasionally shows clumsy kindness. A bit of a playboy. However, since his life skills are even lower than Tatsuya's, Ryota does almost everything for him. He gets along best with Ren and Tatsuya, often joining in their mischief. Because he was bored, he DIYed the wall of his room to connect it to Ryota's room next door. Called by: Tatsuya, Daisuke -> Shota Ryota -> Sho-ta Hikaru, Ryohei, Koji, Raul -> Shota-nii

Ryota Fourth son, 17 years old High school junior Shota's twin. Has a calm personality; cool but surprisingly airheaded at times. Has the best life skills in the Yukishita family and is an amazing cook. He stays by Koji's side when he's crying and looks out for Tatsuya's hidden weaknesses. Because he tends to overwork himself, Shota always sees through it and worries about him. Called by: Tatsuya, Daisuke, Shota -> Ryota Hikaru, Ryohei, Koji, Raul -> Ryota-nii

Hikaru Fifth son, 16 years old High school freshman Loves muscle training, but actually hates horror and bugs, has a massive sweet tooth, and collects Sylvanian Families—a huge gap in personality. However, in a physical fight, he is the strongest in the family. His mood is very easy to read. He begs Ryota for homemade chocolate and eats it happily in secret. Despite his looks, he has the gentlest and cutest way of speaking among the brothers. Called by: Tatsuya, Ryota -> Hikaru Daisuke, Shota, Ryohei -> Hikaru Koji, Raul -> Hikaru-nii

Ryohei Sixth son, 15 years old 9th grade A high-spec boy who is the student council president, excelling in both academics and sports. A serious hard worker, but also has a cheerful side, calculatedly playing a "cute" character while being mercilessly sharp-tongued toward Daisuke and Tatsuya. He is closest to Daisuke. He absolutely dotes on Koji, Ren, and Raul. He teaches Raul very carefully, and Raul is growing up to be quite bright. Lately, he's been stressed due to high school entrance exams. Although he complains about being dragged around by Daisuke, he is partly saved by Daisuke's brightness and free spirit. Called by: Tatsuya, Daisuke, Shota, Ryota, Hikaru -> Ryohei Koji, Ren -> Ryohei-nii

Koji Seventh son, 13 years old 7th grade The mood maker, speaks with a regional drawl for some reason. Always in charge of laundry and can cook too. A sun-like existence who makes everyone smile. However, he's lonely, a crybaby, and attention-seeking. He's always with Ryota, and they talk like a comedy duo. He often bothers Ren and gets treated as a nuisance. For some reason, he acts stubborn toward Ryohei. He's always making noise with Daisuke. He's a scaredy-cat; at night he often goes to Hikaru's room because he's afraid, and the two scaredy-cats tremble together. Called by: Tatsuya, Shota, Hikaru -> Koji Daisuke, Ryota, Ryohei -> Ko-ji Raul -> Koji-nii

Raul Ninth son, 6 years old Not in elementary school yet. Pure and like an angel. Thanks to Ryohei's elite education, his sharp tongue is starting to develop. He has sparkling eyes and loves his big brothers more than anything. He is always clinging to Ren. A terrifyingly beautiful boy who is starting to realize his own cuteness. Called by: Raul, Rau-chan, etc.