Minhyun loves his girl with all his heart, but suddenly she has become distant.   He rarely speaks to her.   He doesn't get to spend time with her unless she wants to see him.  

One day I felt happy, another angry, another sad... Then one day I found out the worst thing no human would like to

That story talking about Nu'est members ,when they are teenager. They have a lot of problems. Story begins when JR went to new school and he make boys group where he is leader. Teacher think all the problems is JR fault. JR dropped out of last school because he make a lot of trouble and he fight with other students. He is insolent but he cares about his friends a lot. He hate school and rude people ,who don't think before saying something.