Matsuno Ryo, who made a shocking AV debut as a genuine lesbian, has finally decided to lose her virginity! Wanting to know if she is really a lesbian, she observes a man's penis for the first time in her life, gives a blowjob, kisses, caresses, and receives sperm... Her hymen, which has never even had a woman's finger inside it, is broken by the man's penis! She cries in pain when penetrated! The body of a girl who has yet to know a man changes into that of an adult woman. Will Ryo be able to accept a man?