Escaped convict Jikawa Genpei sneaks into a mansion and rapes Tokie, the wife of Kannon Yasahisa. Genpei flees once again, but Tokie becomes pregnant. Although Yasahisa urges her to abort, Tokie refuses, believing the child to be her husband's, and gives birth to Tatsuya. The existence of this child born from such a violent act creates new ripples throughout the story.