Isaya Shoto

Isaya Shoto (菖藤 依早弥 Shōto Isaya) was the first Pureblood vampire to whom Yuki makes her offer of being a Grim Reaper. Isaya is a long-time friend of Kaien Cross, even before Kaien was friends with the Kurans. Due to being in a fifty-year slumber, he missed the most of the events occurring his in the world. During his meeting with Yuki, he questions the wisdom of her mission, but remains impressed by her and reflects on the similarities between her and her adoptive father, Kaien. Though Kaname intended to kill him, Kaien protected Isaya and engaged in a fight with Kaname. Isaya is later asked by Kaname to turn Yuki into a human again, something the ancient Pureblood finds to be a worthy way to end his life. However, Isaya changes his mind on complying once Zero drinks Yuki's blood to regain the memories of her she took from him; he ultimately goes against the idea since there was no need to do so for protection anymore. According to Yuki, Isaya vanished after that.