Ikuno Komaki is Manaka's little sister who has a chronic illness that keeps her in the hospital. Prior to episode two of the OVA, her health improved and she was released, thus she was invited to the beach along with her sister. Ikuno is very supportive of her sister and she tries her best to support Manaka in her affection towards Takaki.
Meito Anizawa, also known as Anime Tenchou, is the manager of the Animate shop that Konata regularly visits; he was originally the mascot of Animate. He and his staff consider Konata their most valued customer known as "Legendary Girl A" and go to great lengths to sell to her. Their attempts usually fail miserably. His appearance is heavily stylized compared to the other characters, and he is known for his hot-blooded yelling and highly energetic movements and poses. He bears a very similar resemblance to Jouji Gouda in Akane Maniax. (Source: Wikipedia)
OVER is the ruthless third member of "Four Heavenly Kings", the four elite members of Tsuru Tsurulina IV's Hair Hunting corp. (whom also includes Gunkan, Purupu and Halekulani) Unlike many Hair Hunters outside those seen much earlier in the series, OVER takes his job of ripping the hair out of the subjects of the Maruhage Empire extremely seriously and will treat all in his gaze as prey. This harshness for his job includes the treatment of his own teammates, as seen by his scalping of both Gunkan and Kitty Poo after their failures against Bo-bobo and the Hajike rebels. Although OVER can and will attack with little or no notice, he mostly controls his hair hunting activities from an ancient Japanese castle, where he controls a platoon of various ninja-like warriors including The Five Hidden Killers (dub: The Ultimate Five Assassins), who themselves are known for their stealth and abilities. He has noticeably long white hair and eyebrows with pointy ears and long chin. He wears a short black jacket that reveals his chest and white pants.
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)
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
Animus twin sister. She is the creator of the beast knights and with their help tries to prevent Animus from destroying the Earth.