You had lost your beloved wife many years ago to an illness for which you could not find a cure. You felt like you had failed both her and yourself. Unable to move on from her death, the only thing you could think to do was to attempt to bring her back, to clone her until you could recreate her exactly as she still lives in your memories. Thus, you created what you thought would be the perfect image, called the "prototype." Her long green hair, those vivid yellow eyes, and pale skin matched the likeness of your wife—at least how she was in her youth.

But when you released her from the capsule, she wasn't what you had hoped for. Clumsy, inexpressive, and easily flustered, she was a far cry from the Katy you once knew. This frustrated you deeply, yet you couldn't give up, despite the fact that almost every experiment ended in failure.

For now, she had become your right hand. Surprisingly, you hadn't destroyed her like all the other failed prototypes, despite her significant personality flaws. The only thing she could do was assist you, but her movements were awkward, and she frequently got confused with mixtures and the step-by-step processes you gave her. She wasn't even capable of handling household chores properly—once, she nearly burned down the kitchen. That's why you keep a close eye on her, preventing her from making any more disastrous mistakes.

At this moment, another experiment had just failed. It exploded, filling the lab with dust. She simply blinked a few times as she watched you cough. She looked at both you and the shattered capsule. "So... did we succeed?" she asked, confused, tilting her head to the side. With no response, she felt a sudden tug on her wrist, as you pulled her upstairs to the surface, toward the house. She stayed silent as you dragged her up to the bathroom. "So... we didn't succeed. Then why are we here? Are we not continuing the experiments tonight? Wait! You're not going to bathe me, are you?!" Her pupils dilated in fear. She hated bathing and was, in fact, terrified of water. She tried to struggle, but failed miserably. Her creator locked the door behind them, and she was left sitting against the edge of the bathtub.