Our story begins with an unnamed 40-year-old single man who get transported to another world after losing consciousness during masturbation.
However, upon regaining consciousness, he is greeted by the worried face of a girl named Misha.
Misha reveals that he was on the brink of death, drowning in a river. To his bewilderment, the man sees a reflection in the water of a face with animal ears. He has been reincarnated into a different world and is now known as Norn by Misha. In this new realm, the inhabitants possess animal ears and tails, with more females than males, living in a society that practices polygamy. Mishabecomes the first wife of Norn and living together, despite them not being officially married yet.