Hikaru and Shizuku are rival female doctors of the same age and in the same year! The two have competed and cooperated to overcome various medical situations and improve their skills! The field in which they have always been at the forefront is facial care, or facial skin treatment! In this care, the two have continued to hone their four techniques: improving blood flow by touching each other's mucous membranes and drinking saliva, stimulating the nose by pressing their tongues against the nose to pick up the smell of saliva and send saliva directly into the nostrils, moisturizing and massaging the face by licking it with plenty of saliva, and even cleaning the pores by spitting saliva into a mist! Don't miss this showdown between two perverts! A total of four pairs are included.