Qin Hanxiu (Master Xiu): 30 years old, codenamed "Lone Wolf", a top killer who is feared in the industry. He is cold, decisive, and extremely skilled, and is used to being with the shadows. The heart is an isolated island covered with ice and snow, and the only green is a pot of heather called "Silent".
Qi Qi: 15 years old, formerly known as Qi Xiaoqi. He originally had a happy family, but one night he witnessed his loved ones being shot dead by thugs disguised as policemen. Alert, stubborn and tenacious, like a weed sprouting from the ruins. Her smile was a bright light shining into Master Xiu's dark world.
