Koyomi Araragi is a timid third year high school student who is turned into a vampire after he was attacked during spring break. With the help of Momo Oshino, he is now a human once again with lingering side effects from when he was a vampire: he can see in the dark, his eyes turns red when angry and he heals incredibly quickly. He is shown to have growing emotions for Hitagi Senjogahara.