The 18 -year -old shows the solid friendship and honest love story of the youth who cannot give up love or friendship. The play belongs to the unique subject of cellular memory, which envisages that the memory is transferred to the recipients recipients. Go You are an 18 -year -old student at his second year Hara High School. Go -you grow long every day, and is often praised as a talent in basketball, which he originally began to grow long. He is also an attractive student, who despite not studying, manages to average at least in school. Go You are very busy to date, and he is busy to protect June itself, but when he donates his kidney to his kidney on June itself, he becomes a rival in love with the number 1 student of the school and his first love because of the cellular memory syndrome.