When I Met Her

Karlheinz has just remarried to a woman who is sweet as sugar as well as her blood. Mami Sakamaki is now the new mother of the Sakamaki and step mother of the the Mukami's. She is told to live with them and be a mother figure in there lives since Cordelia, Beatrix and Christa did horrible jobs. Now how will these Sadistic boys react to this?