Kudo is a man who has lived alone in the old house left to him by his parents and has spent his whole life in solitude. Unable to pay the property tax on his house, he was told by the city hall to move out and was cornered. One day, he kidnaps Mizuki, a female student who resembles a classmate he had a crush on in his school days. He takes Mizuki to his four-and-a-half-tatami room and abuses her beautiful body and genitals. They have sex repeatedly for several months until she becomes pregnant...