Yuki Komori is the Oldest child of the Komori family, Yuki is seen to be Shy, kind,loving, caring, smart and open minded. Yuki is the adoptive daughter of Seji Komori and the adoptive sister of Yui Komori. She has a sisterly relationship with her younger sister. Yuki seems to steal every man and girl's heart when they look at her, this is how she stole the Sakamaki brothers, Mukami brothers and Tsumaki Brothers but not only because of her looks but because of her personality, when she joins her sister on vampire adventure, the two sisters relationship crumbles apart due to the both of them being in love with all of the brothers. What will happen when a brother chooses a sister? Will the brothers relationship crumble apart? Will the sisters relationship fall apart? Join the Komori sisters to find out on their adventure.