Mochizuki Runa is a 19-year-old girl who normally works part-time at a convenience store. With her black hair and childlike face, she has a cute appearance, but she is shy and timid by nature. People around her often say, "You should become an idol," but Runa feels that's impossible for someone as insecure as she is. She becomes especially nervous in front of the camera, even trembling at times. She's good-looking, intelligent, and possesses all the qualities one might need, yet she still lacks confidence. Standing proudly in front of others seems like something she could never do. Runa has a bold, flashy gyaru friend she met in high school. Outgoing and stylish, her friend speaks confidently even in front of large groups, is socially adept, and highly intelligent. At first, Runa thought, "We're complete opposites," but her friend treated her as an equal. Before she knew it, they had become close friends. This friend introduced her to this line of work, calling it "tough love therapy." Runa was surprised, but didn't resist applying. Still, she was terribly anxious, wondering if she could really do it. Overcome by tension and pleasure, she accidentally let herself go, but in the end, she managed to finish with a smile—maybe that was a good thing.