Shy, adorable newcomer Fuuka enters porn after hearing that having a porn actor massage her breasts can make them grow. Her first nude reveal exposes beautifully shaped breasts that are hardly small, but she feels inadequate beside friends with J- and K-cups. She combines breast-growth massage with sex in pursuit of a J-cup, cumming and squirting again and again. The finale asks just how many centimeters her breasts can gain.