Koyomi Araragi (???? ?, Araragi Koyomi?)
á á Voiced by: Hiroshi Kamiya
á á Koyomi, the main character of the story, is a third year high school student who is close to failing every class except math. Shortly before the novel begins, he was attacked by a vampire during spring break, and became a vampire himself. Although Meme Oshino helped him become human again, there are a few lingering side effects; he can see in the dark, and he heals faster than the average human. He is still scared of morning sunlight even though it no longer has any effect on him. He started dating Hitagi at the end of Mayoi Snail.
Hitagi Senj?gahara (???? ???, Senj?gahara Hitagi?)
á á Voiced by: Chiwa Saito
á á Hitagi, the main character of Hitagi Crab, is a weak-looking girl with an "incurable disease". She is in the same class as Koyomi, but he has almost never heard her speak. When she was in the first year of high school, she encountered a mysterious crab, after which she became weightless. Ever since, she has avoided contact with everyone else, threatening everyone who discovers her secret. She called herself a tsundere and always speaks in an abusive style. At the end of Mayoi Snail, she admits that she loves Koyomi, and subsequently enters into a relationship with him.