The Gothic Sister(Diabolik Lovers Fanfic)

(Warning: Yui's a bitch in this fanfic) What happens if Yui Komori did escaped from the Sakamaki mansion and was never seen again? What if her younger sister, Ebony Komori, came to the Sakamaki mansion and meet the bloodsucking and sadistic vampiric Sakamaki brothers? Ebony Komori is a beautiful gothic girl who is ado...