Butter

"Butter" is a cult Japanese bestseller that intertwines the lives of gourmet cook and serial killer Manako Kajii and journalist Rika Machida. Kajii, imprisoned for the murders of lonely businessmen, initially rebuffs all interview requests until Rika reaches out for a recipe, sparking an unusual correspondence. As their meetings progress, Rika's late-night cooking evolves from instant ramen to intricate meals, revealing deeper connections between the two women amidst themes of obsession and societal critique. Inspired by the true story of the "Konkatsu Killer," the novel delves into the complexities of food, gender, and the darker side of human nature.