Yumiko and her son Masahiro were bound by a strong bond, but it was so intense that their relationship escalated in the wrong direction. Wanting to comfort his mother, who felt lonely due to the stagnant marital life, Masahiro pressed forward with that single-minded determination. Yumiko, wanting to respond to her son's kindness, accepted him. However, after just one mistake, Yumiko's body became captivated by her son. And her son was insatiable. It was unstoppable. The two clung to each other physically to the extreme, drowning in a forbidden world.
