Kiyo's childhood friend who trains in the mountains. He came down from his training to meet Kiyo once again this time to protect her. This is because in the past, he was a cowardly boy always having Kiyo repel evil spirits (exorcism). He then admired her strength and vowed to be stronger in order to return the favor. His sword detects any evil aura- and sure enough, whenever Kuroboshi is around, his sword detects it. He proclaims himself Kiyo's bodyguard when he learns that Kuroboshi is a vampire. He fights Kuroboshi during the Romeo and Juliet play, and he still claims his position as bodyguard because he claims that Kuroboshi is weak.