Birthday: November 3 Height:157cm Yūki is a mysterious girl that Takaaki meets in school at night, and for some reason she is not usually seen. She carries around a notebook called the "Trash Basket Notebook". In the anime, she is seen in a flashback in Episode 13 as a young girl who is crying because she is moving away.
Birthday: December 1st Karin is a very happy and lively kind of girl. She owns her own school club were her and the club members go out and search for mysterious things, such as aliens. She tries to get Takaki to join her club, but he declines. Soon after, they have a little accident were Takaki falls on top of Karin. Karin then makes him join her club after she semi-threatens him.
Tenkou is an evil, powerful man and the King of the Shitennou (Four Heaven Kings), who he controls and commands. He is even more powerful than Nakago, who served him, and even more evil. Tenkou believes he is a god, and it is his dream to attain the ultimate power of the "Shi Jin Ten Chi Sho", and become the ruler of both the book world and the real world. Tenkou is extremely powerful, merciless, and cruel. He kills people with no hesitation or remorse, and controls others, forcing them to acknowledge his superior powers. From linkFushigi Yuugi - The Fire of Suzaku's Wings
Manda is the personal summon of Orochimaru. Manda was the largest snake in the world, before being recently out-sized by his clone, Manda II. He easily towers over buildings, trees, and large rock formations. Due to his length, he is even larger than Gamabunta and Katsuyu, easily coiling around Katsuyu and having more length behind him, and he could open his jaws wide enough to swallow Gamabunta whole. He is colored purple, and has black rings running down intervals on his body. He has massive fangs, though they are arranged in a way similar to that of a constrictor snake instead of a viper or other venomous snake species, presumably carrying venom in them from the way they were designed, and green eyes. He also has four horn-like protrusions on his head.
Konomi's mother. She is friendly towards Takaki, enough to entrust him with her own daughter overnight. She often calls him over to eat breakfast or dinner with them. -Wikipedia-
A member of the Manga Society, Takayanagi is on friendly terms with the Genshiken members and is seen conversing with them from time to time on various matters. In one notable instance, he finds himself in the unenviable position in the middle of the battle between the girls of his club and Ogiue, who had attempted to join. He is much relieved when the Genshiken takes Ogiue in, as the other girls in Genshiken are already hated by the Manga Society girls for various reasons.
A senior, as well as a former student council president. She only appeared in the PC version of To Heart 2, where she attempted to pair up Takaaki (the main character) and Sasara Kusugawa (the female character added in the PC version). In To Heart 2, she was notable for using the trademark tendencies of others, e.g., Lucy Maria Misora's "ruu". Her full name (which was identified only in this game) is Maako Asagiri. (Source: Wikipedia)