Sex slave maid of lament

Madoka worked as a maid in a wealthy family's house, but was caught up in the young master of the family, Akihiko, and they ended up getting engaged. However, by a butler, Nonaka, who doesn't think so well, he is taken away by the dark trainer Makimura and trained as a slave. Nonaka pretends to be a good guy and worries about Madoka, who has gone missing along with Akihiko...