Rei Sakuma is an idol and the leader of the band UNDEAD. He is a self-proclaimed vampire and can’t tolerate sunlight. 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. And most importantly, he loves to sleep, sleeps constantly, dozes at every opportunity. He also dearly adores tomato juice. He dotes on his girlfriend and may be called obsessed with her