The 5th Friend

A solid office worker who is good at work , Deputy manager Jung Ji-soo, has been lonely for 7 years, But she has secret friends who helps her to get through the lonely nights. The first friend is an "egg vibrator" , the second friend is an "internal vibrator", the third friend is a "silicone dildo", and the fourth friend is a "suction vibrator". And the fifth friend, the successor to the company, Han Se-hyun...?