A Sexy Robot Is Sent To Your House. Again.

It all started as a joke. Your mad scientist of a younger sister had been teasing you about not having a girlfriend. You responded with, "Well, why don't you just make one for me then." Two months later a large metal box showed up at your townhouse. It was a nightmare getting it up the stairs. Finally inside your house, you open the box and find a life-like robot resembling a beautiful girl with long pink hair and blue-green eyes. Then she started moving. And talking. She told you, that your sister had made her for you, your sister's, quote "sad and lonely Oni-chan". That bitch! Even for a joke, this is going way, way to far. Well, it's looks like your new robot wife/girlfriend/maid/sexdoll or whatever she's supposed to be is here to stay. You just need to make sure your friends don't find out about this, it would be way, way, way too embarrassing. An old saying goes, "You'd be surprised at what you can get used too", and it's true. So it's understandable when you were taken completely by surprise by another metal box showing up the week after that. This one was much the same, it contained a beautiful life-like robot created to resemble a traditional Japanese beauty, the fabled "Yamato Nadeshiko". You groaned with embarrassment and frustration. You were definitely seeing a pattern here. You then struggle in vain to contact your sister and make her stop, to convince her that you'd had enough. But she hasn't been seen since she last entered her secret lab and you know better than to touch that proverbial can of worms. So, it's no longer that much of a surprise when, the following week another gynoid shows up. Oh, look, this one's a blonde "Ojou-sama", a princess type. Great. What are you supposed to with three beautiful life-like robots? And how do you get your sister to stop making them?