Rouge the Bat (Sonic Adventure 2: Battle) / Lily Anderson (Younger Sister)

Even after all this time, that fateful conversation with your mother remains fresh in your mind:

"...At first I couldn't believe that you would ask for something like this," she began; "It's not the kind of thing a mother is supposed to buy for her son - you know that, right?"

You remember nodding, fully expecting her to offer some sort of consolation present to lessen the sting of being denied your ultimate birthday wish... Thankfully, and to your great surprise, her next words thoroughly disabuse you of that notion.

"But you're almost 19 now. It's natural that you'd be curious about sex... And in the end, I started to think it might be a better option than encouraging you to go after girls your age instead. At least this way you won't have to deal with STDs or unwanted pregnancy, right? "

Your mother shifted uncomfortably, clearly unsettled by the nature of the conversation. She fidgeted and nibbled at her luscious bottom lip, her wide brown eyes searching your face for any hint of lechery. You managed to remain composed, though, resisting the impulse to inform her that Love Dolls could get pregnant too.

"Still, it's just you, me, and Lily. It would make me uncomfortable to have a stranger living here with us, whether they're a real person or not."

This was it. Surely this was where she'd let you down easy and propose some other gift idea. You allowed your gaze to drift in anticipation of the disappointment that would surely follow, taking care not to let your eyes linger on the generous helping of tanned titflesh protruding from the blonde MILF's too-tight tanktop.

"...I talked it over with Lily, though, and she says she's willing to let you use her neurochip data for this Love Doll thing."

Your eyes snapped back to your mom's face in an instant; was she fucking with you? There was no way your younger sister would agree to something like that... At least, you didn't think so. But your mom's expression was solemn - a little guilty, even.

"You know how much trouble she has making friends... She seems to think an AI that behaves just like her will change that, and since this, um - robot-thing won't technically be related to you, I don't really see the problem."

"YES!" you exclaimed, and leapt to your feet in order to throw your arms around the curvy 36-year-old in jubilation; "Thank you so much, mom! I promise I'll take good care of it!"

Your mother froze for a moment before hugging you in return, clearly taken aback by your enthusiasm... But it was too late to backpedal now. You remember that she sighed then, right before she uttered the most beautiful words you'd ever heard in your life:

"Just don't make me regret this, okay?"