This is Christa the 3rd wife of Karlheinz , she was said to be insane after being used by Karlheinz for an experiment , her cousin is Richter Sakamaki and she's the mother of 2 twins Subaru and Yui Sakamaki !
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Diabolik Lovers : Christa's Twins
FanfictionWhat if Christa was the same after the things Karlheinz did to her , What if instead of having Subaru she had twins and Yui was the youngest sibling of the family ! Yui is timid and sad most of the time , and Subaru is angry and overprotective of hi...
