Hitomi Honda, a slender married woman, is devastated when she learns she has little time left to live. Desperate to leave behind a child before she dies, she faces heartbreak as her husband is diagnosed with azoospermia, making it impossible for them to conceive. Refusing to give up, she resolves to become pregnant using her father-in-law's sperm. One night, fueled by alcohol and determination, she seduces him and successfully initiates a forbidden relationship. Though he resists and tries to pull out, overwhelmed by shock and fear, she cunningly ensures insemination, ultimately achieving her goal of pregnancy. The story deepens with her poignant longing and relentless obsession, blending themes of creampie, married woman, aggressive girl, and NTR (cuckold). Mother (Mother) presents a raw, emotional tale of desire and sacrifice.