I'm going to destroy your happiness a little... This is the story of a girl who was restrained, confined and raped as a child, and now lives with my father, grandfather and older brother. My mother passed away five years ago, and I live with my father, grandfather and older brother. However, my father remarried recently and a new family member joined us, and a new life began. My new mother and sister are very kind, and we quickly became friends and had the illusion that we were living happily every day. On the 99th night of our life together, my father, who usually comes straight home, did not come home without any contact... I should have realized then that a tragedy was approaching our family... And on the 100th day, my stepsister Ichika confined me and restrained me, and my days of being used as a toy in the basement began. *This work is a slightly emotional psycho-devilish slut drama that uses all kinds of restraint methods to torture fetishists.