When I saw cosplayers for the first time, 14 years ago, I thought they were marvelous as well as somewhat pensive.While they looked amazing, they retained a sense of mystery within this underground culture. They were unique and charming. They longed to be somebody else other than themselves. In them, I found the teenager within myself. When I was younger, I always earnest in my endeavors to do something different. Although I was an unstable, immature, and clumsy boy, I was full of energy. I could not cope with being deeply absorbed in doing various mundane things. I was obsessed with the idea of changing and transforming myself. My book is a reconstruction and visualization of my inner world employing “cosplay” as a method, focusing on my adolescent years during the 1970’s. The cosplay displayed in my book doesn’t reference other animated or literary works as cosplay is known to do. I hope my work reflects an adventurous spirit that I acquired in my youth.