Katsuo is a strange teenager. When he was 14, he started drinking and smoking, his classmates didn't know about his existence, he was like an black spot on black shirt, who was invisible for others. when he was 16, he became bullied by other students and started looking at sociophobic lifestyle. He stopped studying, walking in public places and started listening hard and depressive music. One day, you walked at night in park and saw this guy. He's smoking, listening his new favourite songs.