The Multi-Limbed Dilemma

The morning sunlight filtered through the thin curtains of Diego’s room, casting long, jagged shadows across his floor. Diego groaned, rolling over to hit the alarm on his phone, but the movement felt wrong—heavier, lopsided.

He sat up, his heart hammering against his ribs as he felt a strange, twitching tension near his right shoulder blade. He tugged at the hem of his pajama shirt, his breath hitching as the fabric snagged on something solid, something living.

"What the hell is this?" Diego whispered, his voice cracking.

He pulled the collar down, his eyes widening until they burned. Sprouting from the junction of his right shoulder and collarbone was an arm—a pale, slender, fully-formed arm, currently curled against his chest like a sleeping infant.

"No, no, no. This is a dream. Just a really, really messed up dream," he muttered, pinching his own skin. It hurt. "Okay, not a dream. Why is there—how is there—a third arm?"

He remembered the dream from just moments ago: a woman with skin like moonlight and eyes like shifting nebulas, touching his shoulder with fingers that felt like cold static. He had thought it was a hallucination brought on by a fever.

"Hey, wake up, Diego! You’re gonna be late for school again!" his mom shouted from downstairs, her voice muffled by the wood of the floorboards.

"Give me a minute, Mom! Just feeling a bit sick!" Diego yelled back, his voice trembling.

"You said that yesterday! If you don't get your butt out of bed in five minutes, I'm cutting the Wi-Fi!"

"I’m moving, I’m moving!"

He stared at the limb. It was pulsing. It reached out, its fingers flexing involuntarily, tapping against his own throat. Diego slapped it away with his left hand, shivering at the sensation of his own skin touching skin that felt alien yet intimately his.

"Stop it. Just stay still," Diego hissed at the arm.

He scrambled out of bed, grabbing his largest, most oversized hoodie from the closet—a baggy, black piece that usually hung down to his mid-thigh. He struggled, his movements jerky and panicked. Getting the extra limb into the sleeve was an ordeal; it fought him, coiling inward like a frightened animal.

"Come on, move, you little freak," he grunted, shoving the appendage through the neck hole and into the right arm-sleeve.

It took ten minutes of agonizing wrestling, sweat beading on his forehead, but finally, he pulled the hood up and tightened the strings. He looked in the mirror. He looked lumpy, uneven, and terrified.

"Okay. Just keep it tucked. Don't touch anything. Don't move," he told his reflection.

He crept downstairs, his posture hunched to hide the unnatural bulge at his shoulder. He walked into the kitchen, keeping his back to the wall.

"Morning, Diego. You look like you've seen a ghost," his mom said, not looking up from the newspaper.

"Just didn't sleep well, Mom. Too much studying," Diego said, keeping his voice light, though it felt like it was caught in a vice.

"You should really go to the doctor if you're feeling that 'sick' every morning," she noted, sliding a bowl of cereal toward him.

"I’m fine. Really. Just a stomach bug."

He sat down, carefully positioning himself so his right side was buried in the shadow of the pantry door. He picked up his spoon with his left hand, his movements stiff.

"Why are you eating like that?" his mom asked, eyeing him over the top of the paper. "Did you hurt your hand?"

"Yeah. Woke up, tripped, hit my wrist. It's just sore," Diego lied, his heart racing. "Don't want to overwork it."

"You’re always so clumsy. Here, let me see."

"No!" Diego snapped, perhaps a bit too loudly. He saw her blink, hurt flickering in her eyes. "I mean, no, thanks. It’s better if I just... keep it steady."

"Suit yourself. Are you going to school? The bus is coming in ten minutes."

"Yeah, I'm heading out."

Diego reached for the milk carton to refill his bowl, but as his left hand gripped the plastic, the hoodie sleeve—the one on his right—suddenly surged. The third arm, sensing the movement, lashed out from beneath the fabric.

It shot out like a whip, its fingers splayed, and smacked the side of the cereal bowl with enough force to send it skidding across the granite countertop. Milk splashed everywhere, soaking the table and his jeans.

"Diego! What in the world—"

"I—I'm so sorry! I just... I slipped!" Diego gasped, scrambling to stand.

"You slipped? You were sitting down!" His mom looked at him, her brow furrowed in confusion and growing concern. "What is going on with you? You’re acting like you’re hiding something."

"I'm not hiding anything! I just need to go! I'm gonna miss the bus!"

He didn't wait for her response. He bolted out the front door, the cold morning air biting at his face. He ran until he reached the overgrown, empty park two blocks away, his breathing ragged. He collapsed behind a thick oak tree, pulling the hoodie down to inspect the damage.

The arm was limp now, having retracted slightly, but the skin was glowing with a faint, bioluminescent shimmer that faded as he watched.

"This is not happening. This is not real," he whispered, tears pricking his eyes. He felt like a lab experiment, a freak of nature. He couldn't go to school like this. He couldn't go anywhere.

He remembered the old medical kit in his backpack—his gym bag he’d grabbed in his haste. He pulled out an ace bandage. It was his last resort. He started wrapping it around his chest and his right shoulder, pinning the extra limb tight against his ribs. It was painful, pulling the skin taut, but it stopped the movement.

"Stay there," he growled.

He finished the wrap, his breath hitching as he felt the limb struggle briefly before going dormant. He pulled his hoodie back over his torso, relieved to see the bulge was now flattened enough to pass as a weird posture or a thick undershirt.

Just as he slumped against the tree, a sharp, mechanical chime echoed inside his skull. It wasn't a sound from outside; it vibrated against his eardrum, crisp and cold.

Mutation level: Stabilized. Integration process at 12%.

Diego froze, his hands trembling as he grabbed his head. "Who’s there? Who said that?"

Silence answered him, save for the distant sound of a school bus rattling down the street.

"Integration... what the hell does that even mean?"

He stood up, his legs feeling like lead. He had to get to school, he had to act normal, and he had to find out what had happened to him—before that arm decided it wanted to be a part of his life for good. He took a shaky step forward, wondering if the dream was just the beginning of a nightmare he couldn't wake up from.