Sporting-goods clerk Yua Momoki instantly wins people over with her bright, bashful smile, upbeat personality, and enormous J-cup breasts that cannot be hidden even beneath her plain work uniform. A devoted porn fan, she finally takes the plunge into the industry because watching performers openly enjoy sex looked both hot and empowering. Her past partners were disappointing or sexually incompatible, and she has never felt truly satisfied. Wanting great sex and a chance to break out of her shell, she nervously agrees to pose nude for the first time—and the director immediately recognizes what an exceptional discovery she is.