Kōhei Araragi is a fictional character from the Monogatari series, created by Nisio Isin. He is a high school student who often finds himself involved in supernatural events and encounters various oddities. Araragi is known for his strong sense of justice and willingness to help others, often putting himself in danger to protect those he cares about. Araragi possesses unique abilities, including enhanced healing, which he gained after a vampire incident. Throughout the series, he interacts with several key characters, such as Hitagi Senjougahara and Mayoi Hachikuji, forming deep relationships that drive the narrative forward.