He was lucky that he hadn't gotten lost in the forest or Bill would have been stuck there, alone, with the voices ringing in his head. He had barreled through the front door, not bothering to try to find Grunkle Stan and say "hi" and raced right upstairs. When he threw the door open to the attic, Will let out a shrill scream and darted under his bed.

Bill slammed the door close and sunk to his feet, shaking horribly. His throat was dry and his lungs ached terribly.

"Y-you scared me..." Will whispered from underneath his bed.

"S...so what...?" He managed to gasp out, holding his chest. He kept seeing Dipper and Mabel and their disturbing forms.

Will crawled out from under the bed and walked on all fours over to Bill like a cat. "W-what happened?"

Bill took deep gulps of air, feeding the oxygen into his lungs. "Um, nothing," he lied, "I just ran...ran home."

Will fell for it instantly. He was incredibly gullible. "Oh. D-did you g-get me m-my cupcake?"

Bill closed his eyes for a moment and clenched his jaw. He had been too busy running for his life to go and get Will a cupcake. "No, I didn't. I did not have the time."

A depressed look shadowed Will's face. "Aw, b-but you s-said you would. Y-you were o-out there all d-day."

Bill rolled his eyes and sank onto the floor so he was lying on his back. "I don't care! I was busy doing cool stuff!"

Will leaned over him with wide blue eyes, balancing on his hands that were now on either side of Bill. "W-what cool st-stuff?"

Bill scoffed and crossed his arms. "Cool stuff that you wouldn't understand."

Will put on his attempting tough face. "I-I can understand."

"No you can't," he retorted, "you won't."

Will glared at Bill, but the attempt was still feeble. "Th-that's not fair!"

Bill leaned up, shoving Will off of him so his twin fell onto his back. "Oh yeah? Fight me." Bill pinned Will to the floor and for a moment Will remained speechless at the sudden turn of events before his face turned red and tears filled his eyes.

"I-I d-don't want to-to fight y-you!" Will cried and tried to pushed Bill away.

Bill shook his head, smirking at his victory. "Puny. You can't even beat your own brother. You've always been weak."

Will whimpered pitifully.

"But I'm still getting you a cupcake," Bill added.

Will smiled slightly before it disappeared. "C-can you l-let me up?"

Bill took a moment to prepare his response. "Hmm, no."

Will started crying and Bill groaned in disappointment.

"Oh, come on, you big baby!" Bill complained and shook Will's shoulders.

Will sniffed. "Y-you are so m-mean."

Bill shrugged. "That's just—" he broke off when a sudden stab of pain shot through his head, like a godawful migraine. Bill's arms gave out and he collapsed on top of Will.

Will let out a squeak, red faced, and tried to wake his brother up. "B-Bill?! BILL?!" He shook him but nothing happened.

"Oh, Jesus, my head..." Bill groaned and held his forehead gently. "What is happening...?"

"What h-happened?" Will asked curiously.

Bill kept his hand up by his head, the pain slowly subsiding. "I don't know..."

Will's terrified face became concerned, but it wasn't like the fear had vanished from within him. "Ar-are you ok?"

Bill nodded, trying his best to not come off as weak as his pathetic brother was. "I'm fine."

Will, this time though, didn't fall for Bill's obvious lie. "N-no, you're n-not. Y-you're hurt."

Bill snapped open his eyes, now irritated with his twin once again. "I'm not hurt! Keep up this back talk and you're not getting a cupcake!"

Will shrunk underneath his brother. "S-sorry."

Bill felt a small smile creep onto his lips, but he forced it back. No matter how badly he treated his twin, he still loved him. Why else was he so defensive with Will? "So," Bill started, wanting to change the subject quickly, "what did you do today?"

Will seemed more comfortable at Bill's soft and casual tone. "I-I hung out with W-Wendy,"

Bill clenched his jaw, feeling a pulse of jealousy writhe inside of him. "Oh...really...?"

Will nodded, still pinned beneath the dominant twin. "Yeah, w-we played g-games and other st-stuff." A blush crept into his pale skin. "Sh-she keep c-calling me Blueberry M-Muffin."

Bill's hand clenched into fists unintentionally. "Really?" His voice came out bitter and hateful.

Will didn't appear to notice the hatred. "Uhuh," he hummed and smiled sheepishly.

Bill growled. "Well, me and Wendy are going to hang out tomorrow!"

"Wendy and I," Will corrected Bill fluently.

Bill glared at his brother. "Whatever!" Bill pushed himself off of Will and stood up, brushing his clothes. "I'm going to bed now."

Will looked up at the other teen from the floor. "Are you s-sure you're o-ok?" he asked.

"Yes, now leave me alone," Bill retorted and flopped down into his bed, yanking the covers over him in a frustrated manor.

Will then proceeded to slowly crawl up into his own bed on the other aside of the attic room. There was a long, drawn out silence between the two siblings and it appeared as if they had fallen asleep, until Will spoke.

"Bill?" he called out in a meek voice.

The blonde groaned. "What is it?"

There was a pause. "D-do you hate me?"

Bill went mute at that and then turned around, facing his twin who was at the other side of the room. Will didn't say anything else, his blue eyes just stared into Bill's golden ones. At first the blonde twin didn't respond, but he then got up and walked over to Will and kneeled down by his bed.

"Why...would you think that?" he asked rather stupidly.

Will scrunched up under the covers, looking like a helpless puppy. "B-because you a-act like you d-do all the time."

Bill swallowed and glanced around nervously. It was dark enough that Bill was assured that Will couldn't see the emotion on the blonde's face. "I don't hate you," he whispered and hung his head.

Will didn't do anything in response.

Bill grumbled to himself. "You already know I love you."

Will sniffed. "I th-thought you w-were too cool t-to love y-your brother?"

Bill sighed heavily. "I'm thirteen. It's weird."

Will cocked his head to the side, an adorable gesture that only he could pull off. "W-why is it weird?"

Bill grew frustrated almost instantly. "That's just how the world is, Will! God, you're so stupid sometimes!"

Will drew back, eyes watering. "I-I— sorry."

Bill realized he had yelled at his brother and had been too harsh. "No! No, I'm sorry. I shouldn't have yelled," he looked around the room as he said this. "Tomorrow I'll get you your cupcake, ok?"

Will smiled slightly. "Ok, Brother."

Bill leaned over the bed and hugged Will. "You're gonna be ok; got it?"

Will nodded and wrapped his arms around his twin. "Got it..."

Bill drew away, already uncomfortable since physical contact with family members wasn't his thing, and reached inside the drawer next to Will's bed. He pulled out a small, white, plastic bottle and unscrewed he lid. He dumped out two off-white pills into his hand and handed them to Will. The blonde then reached for the glass of water sitting on the desk and gave it to his brother as well.

"It's fine..." he breathed.

Will then put the two pills in his mouth and swallowed them down with the water. "Y-you're not ever g-gonna t-tell Grunkle St-Stan, right?"

Bill nodded without hesitation and took the empty glass away from Will. "Of course," he murmured and ruffled Will's blue locks. "You did good today, Will."

A sheepish smile spread across the shy twin's face. "Th-thanks."

"It's been a while since you had an attack." Bill patted Will on the shoulder and stepped away from him. "Night."

Will watched his brother crawl in bed and smiled. "Goodnight, Bill," he whispered back.

A/N:
Awwww I love their little sibling relationship. It's so effing adorable w o w