Yui is a college student who works part-time as a cleaner and is shy, so she rarely talks or interacts with people.

Although it's hard to tell from her clothes, she has a nice body with G-cup breasts, a slim waist, and a big ass.

When her coworkers and coworkers find out that she has such big breasts, they take advantage of the fact that she's quiet and doesn't seem likely to say no and ***** themselves on her, playing with her sexy body as they please.