Tatsuya Oishi

Koyomi Araragi, a third-year high school student, manages to survive a vampire attack with the help of Meme Oshino, a strange man residing in an abandoned building. Though being saved from vampirism and now a human again, several side effects such as superhuman healing abilities and enhanced vision still remain. Regardless, Araragi tries to live the life of a normal student, with the help of his friend and the class president, Tsubasa Hanekawa. When fellow classmate Hitagi Senjougahara falls (myanimelist.net)

The 11-year-old Miyamoto Rebecca becomes the new teacher of a classroom which is full of weirdos. Despite her cute looks she's a little beast and can be pretty sarcastic and offensive. The school is not safe anymore now that she's in charge of a class and her students, Himeko, Ichijou, Rei and a white rabbit who took a liking to Rebecca help her to rough up the school and the neighbor with its teacher "ojii-chan." (myanimelist.net)

Follows Araragi's encounter with the vampire Kiss-shot Acerola-orion Heart-under-blade and his journey back into humanity from being a vampire. (imdb)

In the spring of his second year of high school, Koyomi Araragi met the beautiful vampire Kiss-shot Acerola-orion Heart-under-blade. Koyomi saved Kiss-shot, who was on the verge of death with all four of her limbs cut off, but only at the expense of becoming her minion and a vampire. "In order to go back to being a human again, you must take back all of Kiss-shot's limbs." After receiving advice from Meme Oshino, an expert in the supernatural, Koyomi prepares to go into battle... (imdb)

With help from Meme Oshino, the apparition specialist, Koyomi defeats the three powerful vampire hunters: Dramaturgy, Episode and Guillotinecutter. Koyomi takes back all the limbs of Kiss-Shot-Acerola-Orion-Heart-Underblade in order to become a human again. But, when he returns to Kiss-Shot, she reveals to him the cold truth of what it means to be a vampire--a creature of the night. Unable to take back what he has done, Koyomi feels nothing but regret and can only deny his dreadful fate... (myanimelist.net)

Mild-mannered Koyomi Araragi sticks his neck out for a dying vampiress and ends up tasked with fetching her missing limbs. (366weirdmovies.com)