My beloved's future ( reader x various ) Diabolik lovers fanfic

Y/N was simply a new student, enjoying life, normal family, friends, good grades, they had a bright future. That was until, something or rather someone got in the way...Yui Komori a rather pathetic girl; Y/N happened to be the lucky person who caught Yui getting her blood sucked by a hungry vampire. Instead of getting killed, as they should've been, they made a deal to become a helper at the Sakamaki mansion and live there, leaving the rest of their past life behind...so, what does fate have in store for them?