Kasuga Mona works in a massage parlor. Because this is not a sex parlor, there are rules prohibiting customers from touching or having sex with the staff, even the staff. Because she has an extremely attractive body, and massage requires a lot of touching, customers are often "salute" to her. Looking at the pitiful "gun" that can only be "raised" but not "fired", Kasuga Mona immediately circumvented the rules by "accidentally" letting the customer's cock show up and rub against her underwear. Then the underwear also "accidentally" slipped off and the cock immediately penetrated deep inside her pussy! Freely "shooting bullets" deep inside her uterus! After each massage session, customers are very satisfied with Kasuga Mona's "special service", she gradually has more customers, and of course the shop still doesn't know about this...