Chururira・Chururira・Daddadda! [Yuzuki Yukari - Vocaloid]

The true meaning of this song's lyrics are vague and abstract, but it seems to be about a student (Yukari) who is trying to get rid of her schoolmates by telling on them. At the beginning, there are roughly 40 students in the classroom, and she carefully watches each individual to catch them doing anything bad. She declares that she will eliminate every student one by one, until the sole remaining survivor is determined. Finally, there are 0 students left as if a massacre occurred, and she decides to do away with the teacher.