Koyomi Araragi is the main protagonist of the Monogatari series, which begins with Bakemonogatari. He is a high school student who survives a vampire attack during the spring break, which leaves him with certain supernatural abilities. Throughout the series, Koyomi finds himself entangled in various oddities and supernatural occurrences, often assisting others troubled by these phenomena. Known for his selflessness and determination, he plays the role of a problem-solver and protector, particularly for his friends and loved ones, while also dealing with his own complex issues and growth as a character.