Hikiko

Shiroyama Hikiko is just another Japanese high school girl, attending a mixed High School in Tokyo, dreaming of becoming a rich chemist so that she could support her mother and herself.
However, all her dreams are crushed when she becomes the target of three high school bullies, Aoi, Ami and Yuna, after being falsely accused of sleeping with Aoi's boyfriend. All Hikiko can do now is pray the girls don't take the bullying one step too far; she lives in fear, letting her dreams fade away.
But, after a whole year, Hikiko seems to find a way to stop everything. The answer seems to hide in an old Japanese urban legend about Hikiko-san.
Hikiko performs what the legend says one is supposed to do but nothing seems to be happening until she dials a strange number she saw on a subway train.
From then on, things start to get better for Hikiko but terrible for her enemies.