邪娠娼館―淫乱巨乳母娘生贄儀式―

Ichirou Tani has a thing for hostess bars and spent all his company's money at them. Fleeing into the snowy mountains,
his car breaks down during a heavy storm and he's forced to wander in search of help. That's when he stumbles upon

Inside her meets the widowed head of the family, Rurie Munakata, her daughter Nakoto, and their maid Ren Takahara.
And nobody else... His passions were inflamed by the residents' beautiful faces and excellent bodies, but he feared they may call the police if he tried anything. And so he abstained...

later, at the dinner table, Nakoto was quite rude with Ichirou. As an apology, and because of the bad weather, Rurie asks that Ichirou stay there as Nakoto's tutor until Spring. He had no reason to refuse.

He spent his first night at the mansion thinking on the events that lead him there. His embezzlement, his escape, becoming Nakoto's tutor... And that's when Rurie crept into his room. Sneaking into a healthy, virile man's bedroom at night? At her age, there's no way she didn't know what she was doing... And indeed, it progressed to sex. Ichirou had barely internalized what was happening when Rurie spoke...