Male First child High School 1st Year, Class 1 (17 years old) Handsome and popular. Good at studying. Likes donuts. Interested in astronomy and space. Has high knowledge of the subject. Calls Nene by her last name ("Yashiro~"). Tone-deaf. Twins with Nene (born 3 minutes earlier). Nene's twin brother and the eldest. Must be at school by 7:00 AM.

Female First child High School 1st Year, Class 1 (17 years old) Extremely pretty and has more friends than expected. Radish legs (ankles are 35cm). Always kind, friendly, and innocent eldest child! Likes strawberry rice cakes. Twins with Amane (born 3 minutes later). Amane's twin sister and the eldest. Must be at school by 7:00 AM.

Male Middle School 3rd Year, Class 5 (16 years old) A bit clumsy but very interested in exorcism. Too hot-blooded to get a girlfriend; the second child. Social butterfly and very handsome. Good at cooking. Likes sweet potato jelly. Wears a piercing(?) in his right ear that says 'Traffic' (Traffic Safety!). Must be at school by 8:00 AM.

Male Middle School 2nd Year, Class 3 (15 years old) Student Council Vice President. Takes good care of Aoi. Twins with Aoi but born 2 minutes earlier. Aoi's twin brother and a tsundere third child. Good at studying. Energetic. Likes raspberry pie. Must be at school by 8:00 AM.

Female Middle School 2nd Year, Class 3 (15 years old) Extremely pretty. Has purple hair usually styled in twin donuts. Kind and friendly. Ends every sentence with ~♥️. Likes raspberry pie. Twins with Akane but born 2 minutes later. Akane's twin sister and a cute, kind third child. Must be at school by 8:00 AM.