Sweet Dreams

>Luna enters the Canterlot throne room
>Celestia called for her
>Upon entering, Luna notices a small overturned tray on the floor
>Some food has been spilled, along with some green condiment she doesn't recognize
>"Please excuse the mess, there was no time."
>Celestia suddenly appears in front of Luna
>Her eyes are dropping, and she's barely holding herself up
>A yawn escapes her
>"My Sister," Luna asks, "why have you called me? It is nearly time to raise the moon."
>Celestia closes her eyes for a moment a sighs, though she smiles when she does so
>"Sister?" Luna asks again
>One of Celestia's hooves traces the side of her mouth, where a small bit of the green sauce is still visible
>Slowly, she licks it off, eyes still closed
>Her shoulders sag, and Celestia falls
>Luna quickly jumps forward, catching her sister
>She feels her sister's head rub against her, and hot breath against her coat
>"I'm so tired," Celestia breathes into Luna's ear. "And sleep feels so good,"
>Celestia gently bites Luna's ear
>"S-sister!" Luna steps back, easing Celestia off herself
>Luna raises her head to speak, but is cut off by Celestia's mouth suddenly in hers
>There's a strange taste before Luna's mouth goes numb, and heat spreads through her body
>Her hind legs shudder and collapse as Celestia forces herself forward
>From the corner of her eye, Luna sees a green flash
>The light hurts, and Luna closes her eyes
>Instantly, she feels completely relaxed, the heat spreading faster than before
>Her front legs go, completely collapsing and breaking off the kiss
>"Well, well; it seems you love your sister after all,"
>With difficulty, Luna forces her eyes open, and the pleasure fades, just a little
>She sees the Changeling Queen, Chrysalis, standing over Celestia's prone form
>Chrysalis has one hoof raised, covered in the green goo
>Celestia's head lifts just enough to give the outstretched hoof a lick
>"Well, Luna?" Chrysalis asks, "Aren't you tired?"
>"N-no," Luna breathes, staring at Celestia
>"Sister, no, please. We know what it's like to feel this temptation, to wish only to give in, but you mustn't!"
>One of Celestia's eyes flickers open, a tinge of green light within them
>Chrysalis laughs
>"How cute, the night princess doesn't want to sleep, but we both know,"
>Chrysalis moves, faster than Luna's tired eyes can track
>Luna feels breath in her ear again
>"You gave in once. You already know how good it feels, don't you? And you're already so, so tired."
>"I am," Luna starts, "I am stronger now."
>"But you've tasted it once," Chrysalis purrs, gently, tracing a hoof along Luna's muzzle
>Sweet smelling goo sticks to her fur, she tastes it with every inhale
>Every blink sends a spark through her, and closing her eyes feels so good
>Just a little rest
>"What's one more time?" Chrysalis asks, "Go ahead, I can promise there will be no more...nightmares."
>"I am tired," Luna says, finally
>"Good girl," Chrysalis says, allowing a lick of her hoof, "and now,"
>Chrysalis looks out a window, to the rising moon
>A slight green tinge shadows it, washing the light over Equestria
>"Sweet dreams."