Body Horror: His left hand in itself. Specially when he loses control of it and Baki's powers almost consumes him. Hiroshi, Kyouko and Tamamo have to Time Travel to save him.
Chivalrous Pervert: He lusts over Ritsuko and more than one pretty lady, but never over his students and women younger than he is. In fact, he rejects Yukime's affections because of their nine-years age difference, and lectures Izuna when he thinks she's into Enjo Kosai. And while he's undeniably attracted to good-looking women, he keeps himself firmly in check and upholds his devotion to Ritsuko or to Yukime, when they finally become a couple, and he all but stops ogling women after that point.
Parental Abandonment: His mother died when he was young. His father's disillusionment with people (he was the resident exorcist and helped everyone with generosity; they refused to help when his wife fell ill) caused him to grow cold and hardened and he abandoned his son while he sought fame and power.
Perpetual Poverty: To the point he was actually haunted by Binbougami, the god of poverty.
RedLeftHand: And it's actually red —oni look, on the surface, like muscle tissue and grayish purple sinew.
Cursed with Awesome: Playing around with astral projection turned her into a bona fide Rokurokubi: the "long-necked woman." While it frightened the hell out of her and her classmates when it first manifested (she feared Nube would kill her) now she thinks it's cool and has learned to use it to her advantage, from playing pranks on people to extending her neck across townwhich saved her life once, extending her neck so far into the air she couldn't hear the instant-kill cry of the mandragora.
Dumb Blonde: Less about being Book Dumb and more about her amazing lack of common sense.
Breakout Character: Nube artist Takeshi Okano and writer Shou Makura teamed up again in 2007 to create a brand new manga based on her later exploits, Reibai Izuna.
Kid with the Leash: An experienced trainer of kudagitsune, fox spirits that live in tubes (or pipes, or pens, or anything with that shape.) She generally uses them for day-to-day tasks, but can also wield them offensively if needed.
Miko: Subverted, since she left her shrine and family way too early.
Ms. Fanservice (so much that her own Tube Foxes lampshade it, showing up with signs saying "FANSERVICE" when they have to cover her assets.) Her spinoff manga takes this Up to Eleven.
Naked People Are Funny (when she goes through her first crush, her fire powers react and...)
Back from the Dead: After refusing to kill Ritsuko and being tortured to death by her dad's lackey, her body melts in snowflakes. Later she reappears, but with Trauma Induced Amnesia. It takes quite the effort to give her her memories back.
Heroic Sacrifice: To save little!Nuubee, she merges with Baki and seals him in Nuubee's hand. It'll take Nuubee YEARS to find a way to release her so she can properly die in peace.
Sealed Good in a Can: The Oni Baki ate her soul when she was dragged to Hell. It came back to bite him when she manifested inside Baki while the later was about to kill Nuubee, and thus she became the crux for sealing the onu in her former student's hand.
Becoming the Mask: He had initially intended to stay close to Nube to see what made him strong, and thus learn how to defeat him; eventually he became a legitimately good person who would fight to the death for Nube and his students.
