Houkouin has black long hair with fringes coming in front of her forehead with aqua eyes. She has a styled bun on top of her head. Her attire consists of a provocative purple Chinese cheongsam outfit with half of her body exposed. She also has shown to have long fingernail tips. She wears purple pumps and either paint or tattoos of purple flames on her legs (in Episode 3, she isn't wearing the paint or tattoos, and later on in the series she has them displayed on her legs as the left leg is nearly covered as her right leg, it stops up to her mid calf).
Not really much about her history, except that she's an assassin, a sex-witch that specializes in taking advantage in sexual activities with women and men (young such as seventeen years of age) and is a master of Kung-Fu (although she rarely depicts such moves in the series except landing a sufficient kick to Hyougo's abdomen and landing another strong hit towards Chiharu when the two were trying to save Kiriko). She also is a undercover ally of the Shinsengumi and Hitotsubashi Shigeyoshi.
Isamu Kondou and Toshizo Hijikata-
Abilities EditLed by the Onigami, to Share Our Fate! She could also do her special form of teleportation, making guests and enemies being surrounded by the pink smoke as she done the same technique on Hyougo, Chiharu and Kiriko. Instead, she took Kiriko along with her, then leaving a strong gust of wind behind.
"Love is only true when you don't want anything in return." -Houkouin to Kiriko