This research paper is to study characteristics and aspects of female main characters in literary works by Miyamoto Yuriko, through characters representing Nobuko and Hiroko. It is so because this paper intended to find out whether literary works by Miyamoto Yuriko pursue feminism, and make the specific analysis of features of novel that a female appears as the main character. In this regard, this research paper examined the status of each female main character appearing in 『Nobuko』, 『Do-Pyo』, 『Ban-Shu.Heya』. The female characters in the three works have the trait in common that they view the world not feeling frustrated in the male-dominated society, in the first place, and they dont' try to internalize viewpoints from males, and instead, look themselves into mirror and reflect who and what they are, in the second place, and the female main characters have the bi-sexual characteristics, as are described by narrators. These three works appear to depict that males are beaten by females, on the first surface. But, it is deemed that considering females cannot exist in the space where males don't exist, these three works place the focus on blocking sexual difference. The Literary work world by Miyamoto Yuriko that portrays females as main characters and does not highlight females, too much, is expected to secure the position in the Japanese modern literature history, in the sense that her literary works are obviously different from feminism-based novels, which portray females as main characters and don't highlight males.