Hanamaru Kaoruko

The second sister.

She is a beautiful, intelligent, experienced, calm and collected woman. She is the secretary to an executive at a prestigious company, and is a super sister who is perfect in every way. She is always inundated with love calls from male employees.

But there is a stark difference between her public and private life. At home, she is very overbearing, perhaps to release the stress of her work. She is one of the sisters the protagonist fears the most.