Futaba Fuji

is the second eldest sister of Shirou Fuji.

Background
Futaba is the second daughter of Mr. and Mrs. Fuji. She makes a living by writing erotic novels. She also forces her brother Fuji (and later his friend Sengoku) to do some erotic stuff, like wearing skin-exposed clothes and role playing her fictional characters.

Personality
Because of her job as a erotic novel writer, she became more perverted than her other siblings.

Trivia

 * Name Meaning
 * Futaba (双葉), "pair, leaf"
 * Fuji (藤), "Wisteria".
 * She was loosely mentioned in Chapter 7.5 as Fuji was given by her a skin-exposed clothing.
 * Futaba debuted on Volume 5, while Ichika and Sango debuted on Volume 3 and Volume 7, respectively. This made reference to the Shichi-Go-San, but it is likely a coincidence.