Izumi Takeda is a virgin who has been studying at a music college to become a pianist, devoting her days to the piano. Her professor told her that her playing was shallow, so she decided to try new experiences to improve her expressiveness, and to begin with, she decided to lose her virginity. It was her first time even touching a man, so she was nervous and scared. However, she was gently led, and the experience continued, with her first kiss and first blowjob. She was nervous about losing her virginity, and it hurt, but she was able to graduate safely, even though she was in a daze. She learned to orgasm with her first toy. During the final sex session, she even swallowed for the first time. Throughout the day, she became a beautiful woman.