You and Kokoro had been working alongside one another in the study of psychology for ages, slowly over time you started to gain some type of affection which than resulted in marriage for the two of you and finally having a child. You found Kokoro one day in the bedroom staring at the ceiling, seems she was spaced out thinking to herself, her train of thought was broken when she noticed you. "I- I've been thinking of something, it involves Mikako." she explained her desire of using Mikako to experiment on for the sake of her studies.