"I thought for the first time that I was a girl." A beautiful tennis girl who came to Tokyo for a tennis club training camp is picked up! A simple schoolgirl who lives in Toyama is fucked by a Tokyo guy, and then... a documentary about a girl who discovers the joy of sex and finds a new self. I gave a special lesson to an inexperienced sports girl who grew up in the countryside. *There are no performers under the age of 18 in this work.