A female college student came to Tokyo from the countryside with her bouncy G-cup breasts. She has an innocent vibe that makes it seem like she could get laid if she pushed. As expected, she is subjected to excessive sexual harassment (deep throating) by her agency manager. After that, she is forced to engage in sexual favors with the older men in the industry, and her innocent, voluptuous body is devoured... Having become sick, she gradually becomes a slut in order to accept her tainted self. She willingly resorts to the desperate "sick business" of devouring the older men's dicks...