Fuuko Kirisawa
Fuuko is Recca's childhood friend and has always aspired to defeat him in battle so that he would serve her as her ninja. She first appears in the series as one of Recca's rivals who wish to defeat Recca so that he would serve her as her loyal ninja. Due to her inability to defeat Recca, she accepts the Fuujin when Kage Houshi (Kagerou) offers it to her after showing her its powers. Fuuko is then placed under Kage Houshi's control due to a stone that the latter implanted into the Fuujin. Recca successfully destroys the stone, freeing Fuuko from the mind control. She keeps the Fuujin and wields it throughout the rest of the series.
Fuuko is often seen as tomboyish by other characters, and is often laughed at or teased when she shows or says something sensitive or feminine. Fuuko greatly respects human life, and hates those who take it for granted. This characteristic is shown on several occasions, the first being when one of her opponents, Fujimaru, states that he would do anything and kill anyone - even women and children - to achieve victory. (Source: Wikipedia)
It was revealed towards the end that she was inlove with Recca, but decided to give it up so that he can have a happy ending with Sakoshita Yanagi