and is rarely seen without a smile on his face. The second of the Mamizuka twins. Unlike his brother, he is very shy and prone to tears at the best of times. He is very close to Takuma and is rarely seen without him. Unassertive, he often copies or finishes Takuma's sentences. The oldest toddler in the daycare. Smarter than her peers, she speaks relatively eloquently and politely, although she is not above getting into shenanigans herself. She is rarely seen without her favorite giraffe plushie. The youngest child in the daycare. She is often carried on the back of one of the babysitters, usually Usaida. Hayato and Taka's cousin. He arrived at the babysitting club after his mother got sick and became bedridden. Parents/ Guardians The Chairwoman of Morinomiya Academy who lost her son and daughter-in-law in the same accident that killed the Kashima siblings' parents. Witnessing them during the funeral, she decides to take them both under her care under the condition that Ryuichi helps with the babysitter club, providing him with a house and school. Although she tends to be strict and work driven, she reveals a softer side to herself in time, constantly monitoring the siblings and caring for them in her own way. Her most striking feature is her abundant hair, which Kotaro claims is "shaggy" (もじゃもじゃ mojamoja), and calls her that as a nickname. Youko's butler and attendant. He watches over the siblings and treats to their needs. Totally unfazeable, he reacts with dry humor and tasteless jokes to any peculiarities he chances upon. Usually when Ryuuichi is busy with exams, Saikawa takes his place at the babysitter club to help take care of the children. He also becomes friends with Usaida. A caretaker in the babysitter club. He is most of the time seen sleeping on the job and is shown to have a rather demotivated behavior, claiming this is because the chairman is stingy. Although he does not seem to work more than what is strictly required, he does seem to care for the kids and Ryuichi. In the manga, it is revealed that he wanted to be a teacher. In his backstory, he became the way he is, being disappointed on his father's choice of career path after he was laid off. Kirin's mother is a cold-looking and soft-spoken but caring woman teaching Drama at Morinomiya Academy. A freelance photographer, Kirin's