Butter 

Butter delivers a dark, provocative psychological drama exploring food, obsession, and the complex expectations placed on women in modern society. In Asako Yuzuki's gripping novel, Butter centers on Manako Kajii, a manipulative gourmet cook imprisoned in Tokyo for allegedly seducing and murdering lonely businessmen using her culinary mastery. While Kajii refuses to speak to the media, journalist Rika Machida successfully breaks her silence by writing to ask for a simple recipe, sparking an intense relationship where culinary lessons quickly overshadow traditional journalism.

As Rika visits Kajii behind bars, the prisoner teaches her that good cooking requires quality ingredients, especially real Butter, mirroring a philosophy of indulging the senses rather than suppressing them. For Rika—who feels invisible as the sole woman in a demanding news office and survives on instant noodles—these rich, sensory meals awaken a newfound sense of desire, confidence, and self-worth. However, as Rika becomes increasingly drawn into Kajii's magnetic and dangerous orbit, she begins to question the thin line between professional ambition and dangerous obsession, forcing her to confront the dark truths of her own desires.