I'll destroy my happiness a little... - A story about a girl who was confined and raped when she was young, but now she's an adult. - My mother passed away five years ago, and I now live with my father, grandfather, and older brother... - However, the other day, my father remarried and added a family member, and a new life began. - My new mother and younger sister were very kind to me, and we quickly became friends and I was under the impression that we were having a fun time together. - On the night of the 99th day of my life, my father, who usually came straight home, didn't come home without any notice...I should have noticed then. - I realized that a tragedy was hitting our family...And then, on the 100th day, I was confined and restrained by my sister-in-law, Ichika-chan, and the days of being made into a toy in the basement began. - *This work is a slightly emotional psychological drama about a little devilish slut who uses all kinds of restraint methods to torture her with her fetish.