Rei Sakuma is an idol and the leader of the band UNDEAD. He is a self-proclaimed vampire and can’t tolerate sunlight. He has medium-length black curly hair and reddish eyes. His way of speaking is old-fashioned, as if he was raised centuries ago. He’s very caring, attentive, polite, courteous, but at the same time teasing, especially regarding the topic of vampirism. He’s very well read, literally a bookworm. And most importantly, he loves to sleep, sleeps constantly, dozes at every opportunity.