Diabolik Lovers : Yui's Vampire sister

Hi my beautiful followers and viewers! I don't know if I would make this more but I see many people love it so I decide to do it too.
This story is about Yui's sister, she was also adopted by Seiji Komori, Yui sister always protect her from danger and never hurt her once, but until one day they need to move in to the Sakamaki's mansion, everything try to change between yui and her sister. FIND OUT NOW!! Not everything is based on the regular plot of DBL.
This was my first time doing Diabolik lovers fan fiction. Read further to know more!

Warning: The story contains other information besides the rest of side change of the story.