Kurenai, Tantric Ninjitsu successor and disciple to the Master of the sect.
She began displaying extraordinary talent for the sacred arts at a very young age and the Master have extremely high hopes for her, inadvertably also doting on her more than any others.
That is, until the arrival of...
Musashi, a mysterious mercenary assassin, cloaking his identity and joining the sect under false pretense. He and Kurenai were mutually attracted to each other but not long after, Kurenai witnessed her Master being killed by Musashi and vanishing with a sacred scroll that their sect have kept safe for centuries.
From then on, vengence became the driving force from which lead her to follow the trail of Musashi all over the world.