Black Rock Shooter was a silent yet amazing person and she wasn't the type to do anything bad, you can say that she is sort of like a supernatural person, but what she really hates is the school she goes to all of her classmates stay away from her because they thought she was some kind of monster because she stay close to the back looking out the window like she was thinking about someone, Miku was a kind person that wanted to be friends with her, but was turned down right before she asked.
Miku turned around with tears in her eyes and ran to Rin and Teto, who had comfronted Black Rock Shooter about her issues with Miku, she didn't say anything just starred at them like they weren't really helping her with her problem, and so she got up and left out the room to get some privacy, when she was outside she found her friend there waiting for her, Miku looked out the window to see what was going on with her, Black rock shooter had her gun pointed towards the other girl and ran out of class to watch.
Teto and Rin ran after Miku to see what was going on, they reached the door and stopped frozen there watch the girl with the sythe trying to slice Black rock shooter, the two looked at Miku, Rin and Teto and she pointed to aomething they couldn't see and went through it then pointed at Black rock shooter like 'You got lucky this time, but I will be back some day'
