SODstar Aima Yano's first drama! Yano, an office worker, has a drink at home with two of her coworkers who are like male friends, and with the alcohol in her system, they cross the line. The three close friends engage in a threesome, and their sexual relationship continues in the office. Yano discovers her coworkers' bodies and erogenous zones, which she had never known before, and becomes addicted to sex.