I confined my mother, but never imagined that masochist was actually my senior classmate, the spoiled princess.

The basement to drum up something, move the basement clutter found that there are cages and other coaching equipment, the protagonist's mother also wants to let the protagonist coaching their own, since the death of her husband is a little bit of dissatisfaction with the desire, but also do not want to find - a -, look at the protagonist of the chat records in the computer, know the preparation of the evening to the cup of water to drug to stun themselves, the protagonist ate dinner and gave his mother to a cup of water and put the drug, and then wait until the evening to go over and open the door to see that there was no drug. At night, he opened the door to see that she was not asleep.