Natsu, the older of two sisters, has a relationship with Yonosuke, the local kimono trader. Unlike her more conservative sister Oshichi she tries to use sex as a means to climb to a better social position. To even attempt that she first needs to get out of the Buddhist monastery she is working at...
A woman and her bridegroom are found murdered in their bed the day after their wedding. It had snowed overnight and the killer left no tracks. It is up to an amateur detective to figure out what happened. Carefully and systematically, he pieces together the clues in this locked room mystery.
