Class representative Rui is visited in her room by a classmate. He's always had the image of being serious and outstanding, but he's puzzled by an unexpected question: "Hey... does the class president have someone she likes?" For a brief moment, he falters. That reaction piques her curiosity, and gradually a strange atmosphere fills the room. She seems slightly nervous, experiencing something for the first time. "Ah, please... be gentle with me, I'm a virgin," she pleads softly. How will Rui respond to her feelings?