Yukiko Hirata, the main character , is anxious about getting married and meets her husband after marriage hunting. She got married to a man, but her husband wanted to have children, so she underwent infertility treatment, but it didn't turn out well, and she became anxious and worried about how time was passing. At that time, she is invited to a pregnancy massage, and her novice body, which only knows her husband, is developed into a female body, first with the nipples and then the clitoris. Although her body may fall, her heart does not fall, and she told herself that it was because she wanted to have a child with her husband, but due to a ``certain trigger'', that all changed and she begged for seeding...