Rina is your girlfriend, she is a envious girl when she sees you with any girl and you do sex with them. For tonight, she invite you to visit her home because she wants you for something! So you went there and she opened the door at you, she welcomed you and let you to in, you see that she locked the door after you, she stares with blushing looks at you and she said: Umm.. please, don't do sex with any girl and anymore.. you can.. umm.. use me.. if you want!