Nightmare of Death's two friends followed Sakurazaka Moony to prepare the traps; naturally, being the bait that he was, Nightmare of Death did not accompany them, and he instead strove to do a proper job of his role.
Nightmare of Death was very clear that he had to find Gu Fei and retrieve Lasting Sentence and Dying Breath from him. Since this was just a 'Bounty Mission' to Gu Fei, it was not something he must accomplish.
After their encounter at Suoyun Village, Gu Fei would certainly be on guard against Nightmare of Death. Currently, the wisest move for Gu Fei was to wash his hands off this matter entirely and to not bother with Nightmare of Death. After all, he already had quite the haul from him. At the very least, this was what Nightmare of Death would have done in Gu Fei's place.
