For the beautiful girl Kokoro, her time as a student is probably the time with the most beautiful and memorable memories, especially in love. She spent her entire youth with the boy in her class from the moment she stepped into the classroom. The two people's love is becoming closer and closer, not only stopping at simple holding hands and kissing, but they also trust each other with their bodies, the most precious things of themselves. Every time after school, the two rush to find and embrace each other, together they discover new things about each other so they can enjoy the wonderful feeling of teenage sex.