The invitation arrived at 2:13 a.m., when the city was too wet and too bright to sleep.

It appeared on Kai's cracked phone with no sender, only a location and one sentence: If you want your brother's memory back, come alone.

Kai knew it was a trap. He went anyway.

The address led him beneath an abandoned shopping mall, down a service stairway that smelled of rainwater and metal. At the bottom, people in dark coats waited behind velvet ropes. Security drones hovered above them like silent insects.

A girl stepped out of the line and grabbed his sleeve.

"Do not look scared," she whispered. "Fear makes you look expensive."

She had short silver hair, sharp gray eyes, and a black hood pulled low over her face.

"Who are you?" Kai asked.

"Mira. I steal from thieves."

Before he could answer, the doors opened.

Inside, the auction hall glittered with glass cases. Each case held a tiny chip filled with blue light. On the stage, a man in a red mask raised one between two fingers.

"A childhood summer," he announced. "Clean, vivid, and almost untouched. Bidding starts at ten thousand."

Kai's stomach tightened. These were not videos. They were memories, extracted from people's minds and sold to strangers.

Mira watched his face. "Your brother's memory is here, isn't it?"

Kai nodded. "He woke up last month and could not remember our mother's voice."

For the first time, Mira's expression softened.

The next item appeared on the screen: SUBJECT K-17, FAMILY MEMORY, PARTIAL.

Kai stepped forward, but Mira pulled him back.

"If you bid, they will know who you are," she said. "If they know, they will take the rest."

"Then what do we do?"

Mira opened her palm. A small device blinked there. "We make the auction collapse."

She moved fast. While the bidders stared at the stage, she slipped behind a display case and connected the device to the control panel. The lights flickered once.

Then the red-masked man stopped speaking.

Every case in the hall unlocked at the same time.

For one second, nobody moved. Then the room erupted.

Bidders shouted. Drones dropped from the ceiling. Mira grabbed the chip marked K-17 and threw it to Kai.

"Run."

They sprinted through a service corridor as alarms screamed behind them. Kai heard footsteps, then the cold voice of the red-masked man through the speakers.

"Return the property, and no one gets hurt."

Mira laughed without looking back. "They always call stolen things property."

At the final door, a drone blocked their path. Its lens turned toward Kai.

Mira stepped in front of him.

"Give me the chip," she said.

Kai hesitated.

"Trust me once," she said. "Quickly."

He placed it in her hand. Mira held the chip up to the drone's lens. The blue light flashed, and for a moment the machine froze, as if it had remembered something impossible.

Mira kicked the door open.

They burst into the rain behind the mall. The city lights trembled on the wet pavement.

Kai looked at the chip in Mira's hand. "Can my brother get it back?"

"Maybe," she said. "But memories are not objects. If you force them back, they can break."

Kai closed his fingers around the chip carefully.

For the first time that night, he felt the weight of what he had stolen.

Mira pulled her hood up. "Hard truth: saving someone can still damage them."

Then she pointed toward the sleeping city.

"So we find someone who knows how to do it right."