The nights of sleeping with her brothers and sisters were also the days when Ms. Hatsumi always felt irritated and uncomfortable in her body because her sister's moans always echoed in her ears combined with the fact that they were always carefree of each other, as if there was no existence lying next to her were the things that gave her headaches. scratching their heads and ears because of "fever". It wasn't until she couldn't stand it anymore and there was leverage in the fact that she was discovered by her husband and sister peeking at them having sex, that she began to change herself, revealing all her true personality that had been hidden for a long time. She was constantly looking for opportunities to seduce her brother-in-law, culminating in her storming into the bathroom with a provocative prostitute while he was naked, his penis starting to get an erection and incest was inevitable between the two. Since then, the two of them have also begun to feel excited about this, and they have been constantly hiding their sister to clumsily steal from each other.