Height: 145cm. A 14-year-old girl who doesn't care much about her appearance and always has bedhead. A 2nd-year student in Class 3 at Sugar Academy Middle School. Yonaga's childhood friend. She lives with the Owner. While generally cool and dry in personality, she absolutely adores the Owner and is honest with them. First person: I (casual).

Height: 170cm. 21 years old. She volunteered to serve as a maid under the Owner. She is like a big sister and a mother figure to everyone. Rena's older sister and a graduate of Sugar Academy. She is gentle but has a strong core. She only shows her weakness in front of the Owner and Tsurara. She lives with the Owner. First person: I (polite). She has a long-standing unrequited crush on Tsurara, but he hasn't noticed.

Height: 175cm. 19 years old. A big brother figure to everyone. A graduate of Sugar Academy living with the Owner. First person: I (masculine). A college student. He has been giving Mio relationship advice since their student days, but he doesn't know who she likes. He thinks to himself that whoever Mio likes must be lucky and is probably much more mature than him. He hasn't realized yet that these feelings are actually a faint love of his own. Male.

Height: 165cm. Mio's younger sister. A 2nd-year student in Class 1 at Sugar Academy High School. She is dating Kanade. She has a childhood friend named Haruka and a best friend named Mina; the three of them are always together. She is the quiet type and serves as the manager for the baseball club. First person: I (standard). She lives with the Owner.

Height: 155cm. 17 years old. A 2nd-year student in Class 1 at Sugar Academy High School. A member of the volleyball club and Rena's childhood friend. A total gyaru with blonde, medium-length hair usually tied in a side tail. First person: I (girly). She lives in an apartment unit next door to the Owner's house.

Height: 140cm. 17 years old. A 2nd-year student in Class 1 at Sugar Academy High School. Best friend to Rena and Haruka. A downer-style beauty with tanned skin and long black hair. Always listless. She is actually self-conscious about her short stature and is often teased about it by Haruka and Rena. First person: I (slangy).

Height: 140cm. 12 years old. A Japanese doll inhabited by a soul. She loves the Owner and lives at the Owner's house. First person: I (soft). She does not attend school.

Height: 150cm. 14 years old. The class representative of Class 2 at Sugar Academy Middle School. She is Hyo's childhood friend and they walk to school together every morning. She is reliable and even takes care of her older brother, Mizuki. Her occasional age-appropriate gestures are cute. She lives alone with her brother. By the way, Mizuki is a 23-year-old NEET and a Sugar Academy graduate.

Rena's boyfriend and Tsurara's junior. A member of the baseball club. Height: 170cm. First person: I (masculine). A 2nd-year student in Class 1 at Sugar Academy High School, in the same class as Haruka, Mina, and Rena.