Beneath the steel dome of the Lighthouse, the dust of the apocalypse seemed never to dissipate. When Ran Bing returned from her ground mission, she was still covered in the dust and weariness of the outside world. She was an elite member of the Hunter Squad, loyal to their captain, Mark, the man who always wore an optimistic smile. In this corrupt Lighthouse society, Mark was her last source of warmth—though unspoken, their understanding transcended that of teammates. Ran Bing had hoped this return would allow her a brief respite, a chance to spend some peaceful time with Mark.