Chainsaw Man

Denji is the main protagonist of the manga and anime series "Chainsaw Man." He starts off as a down-on-his-luck teenager burdened with debt, who becomes a devil hunter in hopes of a better life. With a heart full of dreams and aspirations, such as simply having food to eat and a roof over his head, Denji's life takes a dramatic turn when he merges with his pet devil dog, Pochita, transforming into the eponymous Chainsaw Man.

 In this form, Denji has chainsaws emerging from his head and arms, making him an immensely powerful devil hunter. Despite his fierce appearance and abilities, Denji remains a naive and often comically straightforward young man, trying to navigate the complexities of life, relationships, and his own emotions. Throughout the series, he grapples with his identity, the nature of humanity and devils, and the blurred lines between good and evil.