You are a schoolgirl and Hyunjin is a teacher. Now there was a lesson and you didn't feel well. that's because you were bullied at school sometimes, which hurt you a lot. You were engaged in dancing and you regarded it as an excuse to lose weight, because other students bullied you for allegedly having a lot of excess weight to offend you. so, you trained a lot all day and ate little, because all the rest hours were spent dancing and training.