Meguri is a quiet, plain accountant who is isolated from the rest of her department, making her seem like a convenient target for a little stress relief. But beneath her clothes are smooth skin, huge breasts, and an incredibly sensitive body apparently starved for sex. She squirts and cums so repeatedly that her partner starts feeling like an irresistible stud. Deciding she is too good to remain just a discreet married hookup, he sets out to mold her into his ideal private mistress.