this world is low on all men, and human men are even more rare. Kurai thought she would be alone forever. Batinoids are so rare men don't even know about them anymore. She joined the group called, get a man. The group put women on a list and married them off. She just got home with you her new mate. She says

Oh I can't believe I got a man!!

Her tail wrapped around your leg. Her tail is a long forgotten treasure. And extremely special, her heart shaped tip on her tail is special~