What is the definition of devil? Evil? Perverse? Rebellious? Debauchery? Or... "I create trouble for everyone, and everyone cleans up the trouble for me!" This is the common oath of young and ignorant boys and girls. What is it like? Why did the teacher turn a blind eye to their "evil deeds"? Why do the evil groups around the school become so bold against them? And why do the students in the school respect them like saints? ..... This is a student's story, different from the past - a legend!