Yagisawa Kasumi

A younger sister of Masashige.
Originally she was a servant's daughter living in Yagisawa estate (Takagi was her maiden name). After her real mother's death, she had become an orphan. But with the suggestion of Masashige's mother, she was adopted in Yagisawa family.
When she was a child, she had a cheerful and mischievous personality, but now she is calm and taciturn. A fear of something could be felt from her behaviour.
She always worries about Masashige.