Just being fucked by the boss just on the phone of the lover

The film is about the office life of the female employee Rin Hachimitsu, she has a colleague lover. But still in the ban on love in the workplace, so she and he had to secretly dated each other, on a business trip with customers, she was accompanied by the chief of the metamorphosis department. The lover at home was very worried about her because he knew the manager. And the more we are afraid of what we will happen, in this movie there is a very excited scene that Rin Hachimitsu is being fucked by the boss and she also hears his lover's phone.