I Am a Hero is a disturbing psychological horror seinen manga following Hideo Suzuki, a mentally unstable manga assistant whose fragile grip on reality collapses when a mysterious zombie-like outbreak turns everyday Japan into a living nightmare. Unlike typical heroic survivors, Hideo is paranoid, delusional and painfully human, forcing readers to experience the apocalypse through fear, denial and psychological breakdown rather than power fantasy. Blending extreme realism, social isolation, graphic violence and slow-burn terror, the story explores madness, identity, societal collapse and what it truly means to be a “hero” when courage is uncertain and survival is ugly. Known for its unsettling pacing, grotesque body horror and haunting atmosphere, I Am a Hero attracts readers searching for zombie horror manga, psychological survival stories, realistic apocalypse narratives, mentally broken protagonists and mature seinen themes. Perfect for fans of Gantz, Homunculus, The Walking Dead and dark horror manga that prioritize tension, realism and existential dread over action spectacle. 🔎 Keywords: I Am a Hero manga, zombie horror seinen, psychological survival manga, realistic apocalypse story, mentally unstable protagonist, body horror manga, dark mature horror, zombie outbreak Japan. Meta Description: I Am a Hero is a psychological zombie horror manga following a mentally unstable man surviving a realistic apocalypse filled with fear, madness and brutal human collapse. Alternate Titles: I Am a Hero Manga / アイアムアヒーロー / I Am Hero / I Am a Hero manga english