Introduced in volume two of the manga, Kuchiki becomes a full-member of Genshiken together with Ogiue in volume four apparently after being kicked out of the Anime Club. Kuchiki is a very abrasive individual, with a loud and obnoxious style of speech and no qualms about doing indecent or improper things (such as spying on girls). He was a part of the Anime Society before he joined Genshiken. He wants to be nicknamed Kuchi (クッ�ー Kucchī?) and enjoys it when people use this nickname. He is also not ashamed to cosplay. Kuchiki is actually the second-best fighting game player in Genshiken, next to Kousaka. He twice expects himself to be named the next Genshiken president, only to be passed over by Ohno and then Ogiue. Mostly a background comedic character, Kuchiki is used as a goad for a good many of Genshiken's slapstick and off-color jokes. One might even consider him a boke to the rest of the Genshiken's tsukkomi. In the relaunch of the manga, it is revealed that Kuchiki doesn't need to look for a job since he's pretty much guaranteed to have a job at a local bank thanks to family connections. (Source: Wikipedia)
Miiru is a new freshman at the college Taka, Keisuke, and Tetsuya attend. She decides to join Keisuke's Ancient Chinese Mythology Club, where she sees and reads some of the "Shi Jin Ten Chi Sho". She believes Keisuke's story about another world inside the book, where his little sister was pulled in and became the Suzaku No Miko. Miiru, however, is the second of the Shitennou working for Tenkou, and has the ability to use blood to control or harm people. She can plant parasites in the blood, or make dolls out of blood and use them as tools for manipulating a person's actions. Miiru is the older sister of Ren, and like her younger brother, was granted her powers by Tenkou and can travel between the two worlds. From linkFushigi Yuugi - The Fire of Suzaku's Wings
Hinako Ninomiya was employed by Principal Kuno to help deal with all the "delinquent" students at Furinkan High. Initially she appears to an elementary school aged child who is rather giddy and excitable. In actuality her tale is much more complex. When Hinako was very young, she was quite sick and was hospitalized. While there she was discovered by Happosai and learned a chi-draining technique from him (he taught her this so that she would stop the nurses from chasing him after he stole their underwear). When Hinako uses this technique she grows into an older, twenty-something woman (her proper age). But the rest of her time is spent as a young, energetic child. Her personality changes to reflect her different ages. Hinako is the homeroom and English teacher at Furinkan for the 10th grade. She also has quite a crush on Soun Tendo because he was nice to her when she was in her child form. Hinako looks upon it as her mission to help Ranma improve his behavior, whereas Ranma would much rather spend his time doing just enough to scrape by scholastically speaking. (Source: Rumic World)
Ogiue is a blunt, self-hating fujoshi and amateur artist whose inner turmoil is the focus of much of the second half of Genshiken. Ogiue hails from the Tohoku region of Japan in the northeast, and as such frequently tries to hide her accent while she attends college in the Tokyo area. When put under pressure though her accent tends to slip through. Her eyesight is incredibly bad, and requires the use of contact lenses or glasses. Ogiue is a fan of yaoi and boys' love, and her taste in doujinshi stems from a preference for shounen series. Among the series she likes are Scram Dunk (Slam Dunk), Haregan (Fullmetal Alchemist), Reass Mood (Code Geass), and Wotaru (Wataru). In junior high, at the request of her friend Nakajima, Ogiue drew a yaoi d�jinshi of a boy named Makita, whom she had been secretly dating. Makita found the d�jinshi and soon after transferred to a different school. This incident is the source of Ogiue's trauma and self-hatred, and it continues to haunt her until she begins to date Sasahara, who is much more understanding of her yaoi fantasies and love of drawing. Ogiue eventually obtains a publishing deal with Monthly Afternoon, the very magazine in which Genshiken was published. In the relaunch of the manga, Ogiue managed to draw in three new members to Genshiken (not counting Sue) thanks to her large artwork demonstration. She has hired the four first-year club members to be her assistants for her professional manga work. (Source: Wikipedia)