In 730, Shiina Yuna is a single parent bringing up her child (Kazuma) without anyone else. Kazuma has a schoolmate named Ryuuta, a little turned man, and keen for his age. He starts to like the Mother of his schoolmate and expounds a plot to coerce her to have intercourse with her. Shiina Yuna is an extremely severe Mom and a regarded proficient woman; however, she ends up bested and is caught up in a circumstance she can’t escape from. The story does not end here because the mom becomes pregnant with a kid’s sperm inside her.