(big brother Sans x little sis reader........this is told as if Sans and Pap were royalty and had a smaller sister. ignore the fact that this song is mlp fan made. i did adjust lyrics........Told in Sans' pov)

Sans walked into the room where SHE was kept. A large crystal much like the ones in Waterfall, hovered in the middle of the room.

Fate has been cruel and order unkind

How can I have sent you away?

The blame was my own; the punishment, yours

The underground's silent today

But into the stillness I'll bring you a song

And I will your company keep

Till your tired eyes and my lullabies

Have carried you softly to sleep

He touched the jewel and slumped forward. Sleep deprivation shown clearly under his eye sockets.

Everyday he came and talked to her.

Once did a monster who shone like the sun

Look out on his kingdom and sigh

he smiled and said, "Surely, there is no body

So mighty and so well beloved as I"

So great was his reign and so brilliant his glory

That long was the shadow he cast

Which fell dark upon the young sister he loved

And grew only darker as days and nights passed

"I'm sorry (y/n) if I had only been a better brother then this wouldn't have happened"

Lullay moon princess, goodnight sister mine

And rest now in moonlight's embrace

Bear up my lullaby, winds of the earth

Through cloud, and through sky, and through space

Carry the peace and the coolness of night

And carry my sorrow in kind

(y/n), you're loved so much more than you know

Forgive me for being so blind

"I wish I could take back everything *sobs* I wish I could just bring you home"

Soon did that monster take notice that others

Did not give his sister her due

And neither had he loved her as she deserved

he watched as his sister's unhappiness grew

"I remember how bitter and cold you became over time. It only got worse and worse no matter how I tried to help"

But such is the way of the limelight, it sweetly

Takes hold of the mind of its host

And that foolish monster did nothing to stop

The destruction of one who had needed him most

"I watched as you emotionally rotted from inside out and stupidly, I did nothing about it like I should have"

Lullay moon princess, goodnight sister mine

And rest now in moonlight's embrace

Bear up my lullaby, winds of the earth

Through cloud, and through sky, and through space

Carry the peace and the coolness of night

And carry my sorrow in kind

(y/n), you're loved so much more than you know

May troubles be far from your mind

And forgive me for being so blind

"I remember the harsh battle we fought. You insisted that you were more capable to run the underground than I was and was willing to do anything to usurp me, even if it meant my death. I sealed you away by using the power of the six souls combined with my magic. It was a last resort method that I regret having used" 

The years now before us

Fearful and unknown

I never imagined

I'd face them on my own

May these thousand winters

Swiftly pass, I pray

I love you; I miss you

All these miles away

May all your dreams be sweet tonight

Safe upon your bed of moonlight

And know not of sadness, pain, or care

And when I dream, I'll fly away and meet you there

Sleep...

"I love you sis.....I'll see you in a few years......I hope"