Ruri Narumiya, who is completely inexperienced in lesbians, has her first lesbian partner, Chigusa Bijohara, an F-cup. At first, the two were awkward and shy, but they held each other's hands and became more and more attractive as lesbians. Chigusa responds with a smile to Ruri who says, "I'm glad Chigusa was my first partner." The pure and loving lesbian play of the two is a must-see.