I met Hikari when I attended a birthday party for a friend. Since there were so many people attending, we split into several groups for the after-party, and Hikari was in my group and we were seated close to each other, so we had a great time talking. At the time, I didn't think that Hikari was married, but she seemed free to get drunk and go home. After that, we went out drinking together again, and I was able to hear about Hikari's family situation. There is a considerable age difference between Hikari and her husband, and it seems that her husband has no interest in having sex at all. Her libido is increasing.