The most popular girl's 'real, unadorned sex'. She usually has a plain and demure demeanor, but when her erotic switch is turned on, she instantly transforms into an aggressive girl. Enter Kodama Rena! If you look closely, you'll see her dignified gaze, plump lips, innocent expression and healthy, fleshy body... she's a true sex genius, as if everything exists for sex. The way she enjoys the pleasure of a dick with her whole body, regardless of appearance, is truly female! Even though she's in a daze, she moans ``It feels good, it feels good, it feels good...'' and her erotic potential is the highest in the industry. This is the story of a girl whose true sluttiness awakens and her personality changes when it comes to sex.