The Girls' Bathroom

Berry, a girl who is a shy middle-school introvert, finally meets her new friends. She likes to say that she didn't find her friends- her "friends" found her. Her shyness, which is so severe that it is comparable with SAD, makes it difficult for her to talk with them, so instead she eagerly eyes each of them in turn, hanging on to each of their words to show that she cares about what they say. The people that she sits with at lunch, Anastacia and Juliet, are unnerved by her creepy staring, and soon enough start badmouthing poor Berry. One day, Berry catches just enough of their cruel words to come to a conclusion:

the girls must die.