Winter Tale ~Shiro no Kyouai Kuro no Injoku~

Mikami Satoshi is caught in a snowstorm. He manages to find shelter at a nearby mansion. In the mansion he meets two women who call themselves Aries and Erias. Though he was going to stay only a short while, Satoshi finds himself fascinated by the women's secret. Was their meeting mere chance? Or was it destiny? The gears of fate are slowly starting to grind together...