Ch.1 Me and my sister

Yui Komori and her sister Amaya have been living with the Sakamaki and Mukami brothers for little over a year. Her sister is always hanging out with Ruki Mukami. Yui and certain red-haired vampire fall in love slowly, but what happens when another girl gets sent to the mansion.
Will Ayato take an interest in her, or will yui's blood be the only thing he desires...

Contains: Ayato x Yui
And. Oc x Ruki

(I still suck at descriptions sorry)

Enjoy:)