The letter began with a date. October the fourteenth. It was written on heavy, cream-colored paper. The ink was black. It was slightly smudged in the corner.

The room was bright. The sun cut through the blinds. Dust motes danced in the light. They were silent. They were still.

Thomas sat at the desk. He was twelve. He wore a grey sweater. His hands were cold. He held the pen. The tip hovered. He did not write.

Across the room, the machine hummed.

It was large. It took up the whole corner. It was made of brushed steel. It was warm to the touch. It breathed. It expanded. It contracted.

It looked like a lung.

It was his heart. Or so it seemed. Or so it felt. It beat in time with his pulse. When he skipped, it skipped. When he held his breath, it held its breath.

It was beautiful. It was terrible.

"Is it done?" Thomas asked.

His voice was small. It cracked.

Elara sat in the chair. She was his friend. She was his ally. She was older. She was calm. She had grey hair. It was premature. It was a sign.

She looked at the machine. She looked at Thomas.

"Not yet," she said.

Her voice was soft. It was like dry leaves.

"Will it hurt?" Thomas asked.

Elara smiled. It was a sad smile. It did not reach her eyes.

"Only a little," she said. "Only at the end."

Thomas nodded. He looked at the floor. The wood was old. It was worn. He could see the grain.

The machine pulsed. A low sound filled the room. It was a sound like wind. It was a sound like rain.

"I don't want to go," Thomas said.

Elara leaned forward. She placed her hand on his arm. Her skin was cool. It was dry.

"I know," she said. "I know you don't want to go."

"Where does it go?" Thomas asked.

"To the city," she said. "To the people."

Thomas frowned. The city was loud. The city was dirty. The city was full of noise.

"They are sick," Elara said. "They are dying. They need this."

Thomas looked at the machine. It shone in the sunlight. It was perfect. It was flawless.

"Why me?" he asked.

Elara did not answer. She looked out the window. The street was empty. A car passed by. It was blue. It was fast.

"Because you are the only one," Elara said. "Because you are strong."

Thomas felt a lump in his throat. He swallowed. It was hard.

"I am not strong," he said. "I am a boy."

Elara stood up. She walked to the machine. She touched the steel. It was warm.

"You are the source," she said. "You are the cure."

The words were heavy. They fell on Thomas like stones.

He looked at his hands. They were small. They were pale.

"I don't understand," he said.

"You will," Elara said. "When it is over."

The machine pulsed again. The sound was louder. It was urgent.

Thomas stood up. He walked to the machine. He placed his hand on the steel.

It was warm. It was alive.

He could feel his own blood moving. He could feel his heart beating. It was in the machine. It was part of it.

He pulled his hand back. It was tingling.

"We have to leave," Elara said. "Now."

Thomas looked at the letter. It was still on the desk. He had not written a word.

"I haven't written it," he said.

Elara looked at him. Her eyes were hard.

"It does not matter," she said.

"It matters," Thomas said. "I have to tell them. I have to tell my mother."

Elara shook her head.

"She does not need to know," she said. "The city needs to know. The people need to know."

Thomas felt anger rise in his chest. It was hot. It was sharp.

"She is my mother," he said.

"Your sacrifice is for the many," Elara said. "Not for the one."

Thomas stared at her. He saw something in her face. It was not kindness. It was duty. It was cold. It was absolute.

"You are wrong," Thomas said.

Elara did not move. She stood still. The machine hummed behind her.

"Come on," she said. "We are late."

Thomas did not move. He looked at the machine. He looked at the letter.

He walked back to the desk. He picked up the pen.

He wrote one word.

No.

Elara stepped forward.

"Thomas," she said. Her voice was tight. "Stop."

"I said no," Thomas said.

Elara’s face changed. The calmness vanished. It was replaced by fear. It was replaced by rage.

"You cannot stop it," she said. "You must go. If you do not, they will die. Thousands will die."

"I am twelve," Thomas said. "I do not want to die."

Elara pointed at the machine.

"It is not death," she said. "It is transfer. It is life."

"It is my life," Thomas said.

"You are giving it to save others," Elara said. "That is what heroes do."

Thomas laughed. It was a short, sharp sound. It was ugly.

"You are not a hero," Thomas said. "You are a thief."

Elara flinched. She looked away.

The machine pulsed. The sound was louder. It was a warning.

"Time is short," Elara said. "The city is waiting. The sickness is spreading. You must go."

Thomas looked at the machine. He saw his reflection in the steel. He saw his face. He saw his eyes. They were tired. They were old.

He did not feel twelve. He felt ancient. He felt the weight of the years. He felt the weight of the city. He felt the weight of the sickness.

He understood then.

The machine was not a cure. It was a drain. It took the vitality. It took the youth. It took the time.

It did not give life. It stole it.

Elara was not saving the city. She was feeding it. She was feeding the city on him. On boys like him. On children.

The truth was cold. It was clear.

Thomas looked at Elara. She was waiting. She was watching.

He looked at the letter. He tore it in half.

He tossed the pieces on the floor.

Elara gasped.

"Thomas," she said. "What are you doing?"

"I am staying," Thomas said.

"You cannot stay," Elara said. "The machine is connected. If you do not leave, it will burn out. It will destroy the city."

Thomas smiled. It was a small smile. It was sad.

"Let it destroy," he said.

Elara’s eyes widened.

"Thomas," she said. "Do you understand? They will die. People you love. People you know."

Thomas looked at the window. The car was gone. The street was empty.

"I know," he said.

Elara stepped closer. She grabbed his arm. Her grip was tight. It hurt.

"Let go," Thomas said.

His voice was quiet. It was firm.

Elara looked at him. She saw his resolve. It was absolute. It was unyielding.

She let go.

She stepped back. She looked at the machine. She looked at the door.

"I will report this," she said. "I will tell the council. They will come for you. They will take you by force."

Thomas nodded.

"Come," he said.

Elara turned. She walked to the door. She opened it. The hallway was dark. It was empty.

She stopped. She looked back at Thomas.

"Are you sure?" she asked.

Thomas looked at the machine. It pulsed. It was bright. It was beautiful.

It was a mirror. It showed him what he was. It showed him what he was becoming.

It showed him the cost.

"Yes," Thomas said.

Elara closed the door. The click was sharp. It was final.

The room was silent.

Thomas sat down. He placed his hands on the desk. He looked at the torn letter.

He felt the machine behind him. It was warm. It was alive.

It waited.

It did not move. It did not speak. It just was.

Thomas closed his eyes. He felt the pulse. It was slow. It was steady.

He felt the time. It was flowing. It was passing.

He did not fight it. He did not resist it.

He accepted it.

He was a boy. He was small. He was alone.

But he was here.

The machine hummed.

The sun moved.

The dust settled.

Thomas opened his eyes. He looked at the door.

He waited.

The end was coming.

It was not a death. It was a release.

It was a letting go.

He let go.

The machine stopped.

The room was quiet.

Thomas was still.

He was at peace.

The letter lay on the floor.

The pieces were separate.

The words were gone.

The silence was complete.

It was total.

It was final.

Thomas breathed.

It was his last breath.

It was deep.

It was slow.

It was free.

The machine was cold.

The steel was dark.

The light was fading.

The shadows were long.

The city was far away.

The sickness was far away.

The people were far away.

Thomas was here.

He was alone.

He was free.

The end.