Sakamaki's Sister (Diabolik Lovers fanfiction) [COMPLETE✔]

Y/N M/N Sakamaki, the oldest sibling of the Sakamaki's. Daughter of Beatrix and Karlheinz. Being the oldest was a tough job looking after the younger boys, but as time passed and they got older, things weren't the way they were...Espically when a certain girl arrives at the masion. The one and only Yui Komori. ──────⊹...