Diabolik Lovers- The BLOOD Sister- Mukami's + Sakamaki's X Sister! Reader

A little girl, five years old, a little sister to the Sakamaki's, she understood them all especially since she was there when they got beaten. One day an innocent game turned into a sinister game that the boy's swore they won't ever play again... Their precious, innocent, beautiful little sister fell terribly ill from an innocent game of 'Hide and Seek' . She got taken away from them not seen for 10 years, oh how they wished they could turn back time....
What will happen to them?
Will they get to see their precious little gem again?
Will they forget her?
If she goes back will they recognise her?
Is there another girl there to replace her?
How will their little sister feel?

Their.... (Y/N)

Read on for more of this exciting story!!!