Ikuko, a plain office worker, actually loves cute things. She was so excited to join a company that sells fancy lingerie and was determined to "design wonderful lingerie," but for some reason. she was assigned to the development department of sex toys! 　 She is a virgin and has never had sex by herself, and her immediate boss is Mr. Matsuno, who is known in the industry as the "demon of sex by himself. I was depressed because of all the bad advice I was getting, but I decided, "I can't go on like this! and with a renewed determination, I decided to develop with Mr. Matsuno!"