I Reincarnated as Thor

Bertinus woke to the sound of wind howling against the thick walls of the Asgardian war tent. His body ached from the battle, every muscle burning and tight, but deep inside him a new fire burned brighter than ever. It was a restless, urgent energy that refused to let him rest.

He sat up slowly, his breath coming out in white clouds. Around him, the other warriors lay sprawled on their bedrolls, snoring heavily, exhausted from the long and brutal fight against the frost giants. Even Lady Sif, who never seemed to truly sleep, had drifted off with one hand resting on the hilt of her sword.

Bertinus stood, careful not to wake anyone, and grabbed his heavy cloak. He stepped outside into the biting night air. Above him, the sky shimmered with green and blue lights, twisting and flowing like living spirits across the stars. For a brief moment, he forgot the cold seeping into his bones.

At his side, Mjolnir hung heavy, its weight both a comfort and a burden. It was a reminder of all he had gained since coming to Asgard ;the power, the respect, the fear in his enemies' eyes — but also everything he might lose if he failed.

As he walked along the snowy ridge overlooking the dark fields below, he heard soft footsteps crunching behind him. He turned sharply and saw Lady Sif approaching. Her hair was loose, blowing around her face like a dark cloud, and her eyes glowed softly in the starlight.

"You can't sleep either?" she asked, her voice low but steady.

Bertinus shook his head and looked out into the distance. "I keep thinking... I was just a normal man, living an ordinary life. Now I'm expected to lead gods into battle. What if I fail them? What if I'm not really Thor inside?"

Sif stepped closer until they stood almost shoulder to shoulder. Her gaze was sharp, but there was a warmth in her expression that surprised him.

"A true warrior is not someone who feels no fear," she said gently. "A true warrior is someone who stands firm even when fear is all they have left."

Bertinus looked down at the snow, trying to steady his breathing.

"You fought like Thor today," Sif continued. "No one doubts you now. Not Odin, not the warriors... not even me."

He wanted to believe her words, but something heavy and cold pressed against his heart. A shadow he couldn't shake — the dark figure he had sensed watching them during the battle, the enemy who hadn't yet revealed itself.

Suddenly, a deep rumble rolled beneath their feet. The ice cracked, spiderwebbing across the ridge. In the distance, a blue glow began to rise, soft at first but quickly spreading like a growing fire.

Sif's hand flew to her sword, her eyes wide. "What now?" she whispered, barely moving her lips.

Bertinus clenched his jaw, gripping Mjolnir until sparks danced across his knuckles.

Shapes began to emerge from the glow, towering even taller than the frost giants, their forms shifting like mist. Their eyes glowed bright blue, sharp and merciless.

Bertinus felt his heart slam against his ribs. These were not just ordinary giants. These were something older, something far more dangerous.

Sif grabbed his arm, her fingers cold against his skin. "We have to warn the others. Now," she said urgently.

Bertinus nodded, but before they could move, a voice echoed across the frozen plain. It was deep and cold, dripping with ancient hatred.

"Thor... or whatever you truly are... come and meet your true test."

The voice seemed to wrap around his bones, sinking into his very soul. Bertinus felt his knees weaken for a moment before he pushed the fear down, forcing himself to stand taller.

He raised Mjolnir high, lightning crackling up the handle and shooting into the sky. The light turned the ice beneath his feet into a shimmering blue mirror.

This was no longer about proving he belonged in Asgard. This was about protecting the people who had come to trust him, about standing against a force that threatened everything.

As the blue figures moved closer, Bertinus felt the fear transform into something sharper. Determination filled every inch of him, pushing away every doubt. He was no longer just a man from Earth, and he wasn't only Thor either. He was both, and that gave him a strength all his own.

Tonight, he would fight with every piece of himself.

Sif grabbed his arm tighter, her eyes wide with shock and fear. "Thor.. look!" she cried.

Through the swirling blue mist stepped a massive figure. Its body was made of solid ice, its eyes like frozen stars, and on its head sat a jagged crown of frost.

The ancient Frost King.

Bertinus felt his breath catch in his throat. His hand tightened around Mjolnir, lightning flashing bright enough to light up the entire ridge.

The true battle had finally arrived, and Bertinus knew that this was only the beginning.

Sif whispered, almost too soft to hear, "What do we do now?"

Bertinus looked into the Frost King's eyes, feeling every ounce of fear and power coursing through him.

He raised Mjolnir one last time. "We fight," he said, his voice steady and strong, even as the shadows closed in around them.