Sachiko is a model student. Because both of her parents are teachers, she always tries to be a good child, though severely restricting herself in the process.
She is very helpful, nice and intelligent. She seems to be very popular.
Sachiko has long, brown hair and greenish eyes. She is light-skinned.
She wears a white blouse and above that, a light-green slipover. Her skirt is a knee-length, dark-green and red kilt. Her socks are white and her shoes are brown.
- Masaharu Miyamoto has a crush on her.
- She is the class representative of 6-2.
- Sachiko was mentioned in Ojamajo Doremi 16 and attends the same school as Hazuki and Tamaki - the Karen Girls' Academy.