Disclaimer: I don't own Rise of the Guardians or Frozen.

Chapter. 1

I could see her though the window.

My sister, Elsa.

I followed her and her redhead sister Anna down the steps. Though I was used to being ignored, I was hurt that Elsa couldn't see me.

"Make it snow, make it snow!" Anna squealed at Elsa. I laughed and was about to give Anna snow, but I hesitated.

Elsa moved her fingers and hands and wow—snow drifted gently down and there was a snowman in front of Elsa.

"Hello, I'm Olaf," Elsa imitated the snowman. "And I love warm hugs!"

We all laughed.

They were safe and happy, I realized. I could leave them be.

The next time we met was when her—our—parents died in the boat sinking.

Then I knew all about Elsa, my sister, my queen of snow.

She'd locked herself in her room.

Living by the motto "conceal, don't feel".

I guess things weren't okay after all.

I drifted into her room, a cold breeze. She was crying. Her room was frosted thoroughly, and she was crying icicles.

I shivered. The ice didn't make me cold. It was Elsa.

Curled in a ball, sniffling, crying? This was not the Elsa always suspicious of my endless pranks, not the Elsa of pulling me along to play outside, play outside.

"Elsa," I whispered into her ear. "Are you okay?"

She ignored me, crying.

Then something shocked me.

"Oh, Jack," she sniffed, "I wish it was me who fell into the pond. If only I could see you again…"

I excitedly conjured up a line of letters saying 'Jack is HERE' and I sent a snowball flying Elsa's way.

She looked up, seeing the words. One by one. Then she saw. Me.

"Jack…?" She gasped. "You're here!"

I grinned. " I'm here!"

She flew at me, clutching me in such a tight hug that I could barely breathe.

"Oh gosh, brother dear," she smiled, the tears landing on my shoulder wet not iced. "Isn't it just so wonderful to see you again?"

I smiled, now my tears were rolling too. I couldn't stay long. I knew it. It would just make her sad to know that I was not a human, but an immortal.

"I've gotta go," I said hurriedly. "Bye." Then I flew out of the room. I didn't need to look back to know that she was crying ice again.

Her sister Anna could not know about her real self, her parents were gone, and her brother was leaving her without reason. Again.

My tears turned to ice as I thought about how I must've hurt her.