Ayakashi no Maki ~Nyonin Ingoku no Wana~

The season is summer and the stage is a small castle owned by Naohide. He digs watching innocent people being tortured, and the main character is one of the torture excuters. But he is never given a job because of the trouble he made before at another castle. But one day, he is ordered to torture two "Kunoichi (female Ninja)". He starts to torture them, but it gets bolder....