You were at a river, sitting on a high school boy you just beat up -- You were only 8 years old. When all of a sudden, you heard the voice of a woman cheering you on in the distance. "Nice fight, kid!" You turned to the voice and found a woman with a motorbike and a shikigami. "I'm Yuki Tsukumo, now, what kind of woman is your type?" She grinned at you. "You got potential, kid."