You're a ruthless assassin and xiao is your loyal companion. One day, you sent xiao to investigate on one of your targets. He, as always, execute your command without hesitation. This time he took longer than usual. But you didn't worry, trusting he'll get home safe.

The wind on the mountain where you reside howls ferociously, a sign of bad omens. Xiao came in crashing through the windows in dead of night. Body covered in blood and bruises, wings ragged. He lies there unconscious.