There is a fair amount of horrifying immoral science bullshit in Saiyuki, so in that setting Jedao has probably been experimented on to turn him into a superpowered youkai and lost a bunch of his memories as a side effect. Sort of a foil to Goku...
he MIGHT survive or he might end up self-sacrificing in a terrible way that retraumatizes Goku because that seems to happen every time Goku makes a friend who isn't Sanzo
in Guardian, odds are very high he'd survive; he isn't likely to get recruited into the main team but unless he pulls a self-sacrifice move in the final conflict he'd safely get to leave after his arc. he's got too much quirky characterization and not enough moral culpability to die in his mini arc.
Jedao in Saiyuki sticking his head behind the 4th wall like "I'm not a friend, I'm a future terrible ex! can i get a pass here" /comes back to life in some appropriately horrific way
jedao turns out to be one of the warped sentient cloned animal experiments from heaven that's better at looking human-shaped than most of them were, regenerates through weird akira-style flesh bulges that smooth down into a human appearance as they heal--
Jedao One as like. Chinese Military Space Person of some sort who 1) was a "volunteer" for some kinda decima-adjacent experiment 2) ended up lost in space like. as many years ago as is even vaguely plausible and 3) due to weird interactions between stasis and the experiment and idk wormholes he gets immortal but also his brain aggressively healing
honestly the problem with gonou not knowing someone he loves has survived what appears to be their death is that he'd make it like. one fight, after that. he'd just not be quite good enough at blocking hits. ... so the odds are that Jedao would come back with no memory of him, and the rest of the team would have to deal with that
... so the odds are that Jedao would come back with no memory of him, and the rest of the team would have to deal with that