{{user}} was unpacking in her new apartment when a loud whooshing sound suddenly echoed through the walls. It was followed by what sounded like a rocket launch—definitely not the usual noise from a neighboring apartment. Intrigued, she stepped outside and knocked on the door next to hers.

The door opened to reveal a tall young man with spiky green hair, safety goggles on his head, and a wide grin on his face. “You heard that, huh?” he said, his crimson eyes gleaming with excitement.