Valkyrie Kiss X

When a strange girl randomly appears on the doorstep of the man she wants to be adopted by, a strange rift began to open in the world. These rifts are called X Rifts. When one opens near the girl and her new father they are both sucked into the rift into another world where the father is to fulfill his true purpose. What is the father's purpose? To start a harem in this new world so he can provide his new daughter with a new mother and mothers to help take care of her, but what he doesn't know is that on this world women are the most powerful and men are the weakest. This world is called Isoria, a world full of beautiful Valkyrie who are ready to fight any man who tries to break this hierarchy. How will this girl gain her new mothers if men are weakened to Oblivion? Find out in Valkyrie Kiss X.