Birthdate: August 4th
Age: 6-7, 15-16
Height: 112 - 120 cm (6 years old) - 167 cm (15-16 years old)
Rin is a six-year-old girl and the illegitimate daughter of Daikichi's grandfather, Souichi Kaga, and manga artist Masako Yoshii. After Souichi died, Masako abandoned Rin for the sake of her career as a Manga artist.
Rin is very independent and mature for her age and is often dealing with issues on her own. Living with Daikichi, she develops a fondness of cooking for him.