ニワトリ・ファイター

In a world where strange, giant creatures known as "Kiju" suddenly emerge, wreaking havoc across Japan, humanity is on the brink of despair. Amidst the chaos, an unlikely hero rises: Keiji, a rooster with the heart of a warrior. Determined to avenge his sister's death at the hands of one such beast, Keiji battles these monstrous Kiju with unmatched courage and a surprising amount of rooster power. As he journeys through devastated landscapes, Keiji not only fights for vengeance but also inspires hope among humans, proving that heroism can come from the most unexpected of places. (Unreviewed summary by Grok 2)