After losing his wife, he raised his beloved daughter single-handedly. Determined that if someone were to take her away, he would make her his own. He recklessly violates his daughter, thinking he should have done this sooner. "I didn't know Iku was this sensitive," he mutters, and then notices his innocent daughter's anus seems to be calling out to him. He instills in her a pleasure from deep within that can't be experienced with just her pussy. When he says, "Daddy's going to put his dick in the hole where Iku poops and fuck you," his daughter replies, "I'm happy to have my anus violated by Daddy..." A child who has experienced anal sex with her father can never be allowed to marry another man. Then, he holds a modest wedding ceremony with his beloved daughter. She becomes an onahole daughter whose three holes are all used by her father, and since they're married, he immediately creampies both holes. He swallows all the sperm. A daily life of incestuous anal addiction with his pure and innocent daughter begins.