Shimohira Rena, 35 years old. She became a caregiver driven by a sincere desire to help others. That spirit of service extends into her sex life, where she diligently studies erotic techniques to please her husband. However, her husband always assumes the dominant "king" position, lying flat while she does all the work. As a result, Shimohira rarely gets to experience her own pleasure, and over time, she grows increasingly weary of suppressing her desires. What she truly longs for is to be gently caressed until she's dripping wet, to drown in ecstasy until she passes out—sex that fulfills her own needs. Such desires are not excessive; they are natural. Through intense, deeply satisfying stimulation, her slender, vibrant body will finally be awakened, allowing her to fully indulge in her own pleasure.