The first live-action adaptation of the smash hit comic that recorded over 30,000 downloads on FANZA Doujin! Wakata, a college student looking for a job, is in love with Misumi, a female friend in the same department, and has confessed his feelings to her many times, but she has rejected him and ignored him. With his part-time job money, Wakata is finally able to request a call girl he has had his eye on for a while and invites her over to his house. However, the busty beauty who arrives is none other than Misumi... This heartwarming erotic manga about young adults is brought to life in the complete film version of the number one slim waist and divine breasts, Kohana No Drink!!