Kana Morisawa SPRD-1508: Concealing her pregnancy from her husband, she asked her father-in-law to help her stay pregnant.

The Morisawa family lives together with the wife, husband, and father-in-law. However, the lack of children is a source of worry for Morisawa Kana, who discusses the matter with her father-in-law. He doesn't offer an answer, but Kana remembers that her husband has many brothers, and her father-in-law's sperm should be very strong, so she asks him for help…