Subaru is hopeless in love with the mere human girl, Komori Yui/Yui Komori. As he attempts to do his actions, to approve his love, he fails. Yui gets confused and tries to figure his body language out. On top of their situation, Suabru wants to protect Yui. He's the only brother of six vampires, who takes responsebility of Yui. He don't want the other brothers to hurt his truelove.