A/N: This is a chronicle of sleepless nights, I guess. I got the idea from this cute doodle thing I saw on tumblr and then I tried to write it to match the doodle (which is the second chapter of this) but I made it decidedly less fluffy, because I can't leave well enough alone. I'm stupid and I don't have a link or anything to the art, so hopefully nobody kills me. Suffice to say, it isn't mine. The last parts will be longer.

Disclaimer: I don't own anything, not anything.

Warnings: The last part of this will be slash. Other than that, get ready for fearsome snuggles.

The first night they shared a bed, Loki was seven and Thor was eight. Odin had stayed up to tell them both a story and neither brother had wanted to miss such a rare opportunity. After the gruesome tale of the terrifying Frost Giants who lived in Jotunheim, however, Loki hadn't been able to sleep. He laid in his bed, curled up around himself under the heavy blankets, green eyes huge. He was scared, but he wasn't going to admit it. One day when they were older, Loki would help Thor kill the Frost Giants. Then he would have nothing to fear anymore.

Loki rubbed his face against his knees. He was cold. Then he heard a knock on the heavy wood of his bedroom door. Loki froze, abruptly convinced that the Frost Giants had come to take him away and eat him whole. The door creaked open. Loki didn't move. He tried to think of a way to fight them.

Then he heard a tiny voice. "Loki?"

Loki pulled the covers down so one eye was free and peeped toward the door.

"Thor?"

His brother looked sheepish, his blonde hair sticking almost straight up. His sleep clothes were too big for him, the bottoms of his pants dragging on the floor and the sleeves trailing over his wrists. Thor was clutching a pillow and staring at Loki, his blue eyes huge, mirrors of Loki's own.

"Yah."

"What are you doing?" Loki asked, pulling himself free of the blankets.

"Well, I. Couldn't sleep." Thor said.

"You aren't scared are you?" Loki asked, a challenge in his voice.

"No! Are you?" Thor asked.

"Of course not," Loki scoffed.

"Can I stay in here tonight?" Thor asked.

Loki stared at him.

"No. Don't be a baby." Loki flopped back down on the pillows.

Loki heard the door click shut again, and then the bed shifted under the weight of another person and suddenly Thor was half on top of him, a warm mass of blonde hair and limbs, crawling under the blankets. One of his elbows caught Loki in the face.

"What are you doing?" Loki cried.

Thor managed to get under the covers, despite Loki's spluttering, a huge smile on his face. He put his pillow next to Loki's.

"Thor, get out!" Loki picked up Thor's pillow, intending to throw it, only to have Thor snatch it right back.

"But the Frost Giants will get me!" Thor rolled onto his back and started groaning, clutching the pillow to his chest. "Don't let me dieeeeeee Lokiiii."

Loki frowned at Thor and then hit him in the face with his pillow.

"There are no Frost Giants in Asgard, Thor."

Thor groaned more and batted his lashes. Loki rolled his eyes.

"Fine." Loki huffed and then smiled despite himself.

Thor saw his smile, laughed and poked him in the ribs. Loki pulled the covers back over his head and snuggled down into the bed, trying to get warm. Thor's pajama bottoms had somehow managed to tangle their legs together and Loki fell asleep easily, then, comforted by the warmth. Comforted by Thor.

When he woke up in the morning, Thor's arms were around him and he was cradled against his brother's chest. Thor's breathing was rhythmic and deep, his face stuffed into the side of Loki's neck. He wasn't cold anymore. Loki felt happiness bloom in his chest, where fear had been the night before.