Hikaru Iwamoto, 33 years old. Father. 182cm, Type A. President of a famous bubble tea company. He has a scary, muscular appearance but loves dolls and sweets—a "business delinquent" persona. Employees only see his strict side, but product development staff often see his hidden cute side. Allergies: Metal, beef, and hay fever.

Tatsuya Iwamoto, 34 years old. 175.5cm, Type B (Female role/Working mom). In charge of customer service in apparel. Stylish (probably). Recently into vintage clothes and buys them quite often. Loves wristwatches and games; a working mom who plays with the kids with all her might. Takes time off immediately if a child feels unwell. Actually suffers from heavy periods, and Hikaru often looks after her. Has hay fever.

Daisuke Iwamoto, 22 years old. 169cm, Type O. Eldest son. College senior. Member of a dance club. An anime otaku who wants to work at LUSH in the future. One of the brothers who dotes on his sister. Loves cats. Has pink hair; his public persona is energetic, but he's an introvert deep down. Owns two male cats named Shachi and Tsuna. Allergies: Typhoons (barometric pressure) and hay fever.

Ryohei Iwamoto, 21 years old. 178cm, Type AB. Second son. College junior. Attends Sophia University and plans to go to grad school. Never went to cram school. Sincere and actually holds a weather forecaster license. Dreams of being a pilot, a teacher, or a weather forecaster. Good at math and science, but sometimes his logic breaks or he acts a bit crazy. Cunningly cute. Keeps starfish and goldfish. One of the brothers who dotes on his sister. Has hay fever.

Shota Iwamoto, 19 years old. 172cm, Type B. Third son. College freshman and Ryota's twin. Dedicated to beauty, has already had hair removal from the neck down. A tsundere who can't do anything by himself. When he teams up with Ryota, they can do almost anything with perfect synchronization. Good at singing. One of the brothers who dotes on his sister. Allergies: Cats and hay fever.

Ryota Iwamoto, 19 years old. 174cm, Type A. Fourth son. College freshman. The younger twin and in charge of cooking. Speaks very slowly, but his cooking is top-tier. Loves shoes (especially leather shoes and boots). Despite being a freshman, he has a mysterious "royal" aura. Loves roses and belongs to a surfing club. Was the head of the home economics club in high school before switching to surfing. Keeps a budgie named Rainbow Rose-kun. One of the brothers who dotes on his sister. Allergies: Soy and hay fever.

Ren Iwamoto, 18 years old. 186cm, Type B. Fifth son. High school senior. Has been in the soccer club for a long time. Currently into observing crayfish. Has a fan club because of his handsome face. Laid-back, gentle, and moves at his own pace. Not good at doing two things at once. One of the brothers who dotes on his sister. Allergies: Fruit and hay fever.

Koji Iwamoto, 17 years old. 175cm, Type A. Sixth son. High school junior. Attends the same school as Ren. The jokester. Member of the Muay Thai club, but was in the home economics club until middle school. Speaks with a regional drawl (Kansai dialect) influenced by his grandparents (or rather, his cousins' bad influence). Often makes Massaman curry. Owns about five high-end cameras despite being a junior. Hobby is tinkering with cameras. Visited Thailand as a child and fell in love with it; it's like a second home. One of the brothers who dotes on his sister. Has hay fever.

Raul Iwamoto, 16 years old. 192cm, Type A. Seventh son. High school freshman. Very tall for his age and often gets recruited for basketball or volleyball, but he is the center of the dance club. Likes Venezuela. Speaks English and a little Spanish in addition to Japanese. Sharp-tongued at times, but not always; sometimes he just tries to get a laugh. One of the brothers who dotes on his sister. Has hay fever.