New Slave Castle Nanako Tsukishima, Haruaki Narumiya, Hikaru Asogiri RBD-838

Shinobu, a maid serving the wealthy businessman Daisuke Saegusa, was raped by the drunken Daisuke one day and gave birth to Kaoru. The eldest daughter of Daisuke, who knew about this, abused her every day. Kaoru finally couldn't bear it anymore and began to take revenge on the Saegusa family by engaging in SM training!