Ushio Yuuta

Under the threat of the vampire race, humanity had to evolve. Eventually, their evolution came to a point where their mere existence could extinguish vampires. They even could control vampires with their own version of the Enchanting Eye. As the vampires went away to another dimension to escape their oppression, humans eventually lost this ability, as the threat disappeared. And so, our protagonist, Yuuta, is the last of this special human counterpart.