A married woman living in Itabashi Ward, Tokyo, with 13 years of marriage and two children. She has a unique sensitivity in her nipples, which she enjoys stimulating with clips. Junko first met the crew when they were drinking together with their juniors, connected through being classmates. They occasionally hung out for drinks back then, but didn't meet for a long time afterward. After several years without contact, they reunited at a drinking party organized by their juniors, which she looked forward to attending. Junko was there too, and she had become even more beautiful than before.