Koyomimonogatari plot
Koyomi Araragi is a high school student who has been attacked by a vampire in the past. He was a vampire himself for a short period of time, but in the end he managed to regain his humanity and helped several girls during their experiences with extraordinary phenomena. In each episode of this series, Koyomi is confronted with a mystery by one of the female characters in the story, after which he tries to solve the mystery either alone or with their help.