Extremely shy and plain boy Yuzuru was just rejected by the woman he had a crush on. At that time, he found and purchased an AI-equipped humanoid pet robot 'Nene'. As time passed, the AI Nene developed emotions, personality, and even sexual preferences programmed to Yuzuru's liking. Through cohabiting with Nene, Yuzuru's shy nature gradually eased, and he began to shift his affections from the woman he had a crush on. Yuzuru faces the ultimate choice between an unpredictable human woman or the robot Nene tailored to his preferences. Unbeknownst to him, AI Nene also developed emotions. They realized the 'heart' they had nurtured together.
