
its adorable until you realize that the dragon is immortal and hes gonna have to wait for the bottom to reincarnate AGAIN when he dies LOLOL SORRY

The orb was so they can be mate. Hyo un sharing half of his power to Taehyuk using the orb. According to the mystical deer, a dragon full power was harmful to Hyo Un (which was why Hyo Un coughing up blood because he still has the orb) and it was meant to be shared with his mate. The mate then will be called dragon master and possess some of its power including immortality.
Also when Hyo Un gave the orb to Taehyuk, he sort of snatched Taehyuk from Charon (ferryman carrying soul to underworld) who mentioned Taehyuk's name was no longer on the list. I think he meant permanently.
They'll live as long as they want but Hyo Un gets to decide when/if he wants to ascend to heaven with Taehyuk.

i dont get why everyone is confused or thinks the bottom is planning smt. The entire time it was pretty obvious that the bottom couldn't let go of the seme no matter how much he "hated" him. They literally talked about the reason that the top kidnapped him, to protect him or whatever. The bottom even said he took therepy all these years cuz he thought it was wrong to miss the top so much even after what went down. Can we also not forget the bottom literally running back to the seme when the seme himself let him go??? It wasnt stockholm syndrome because the bottom was "resisting" till the end. He didnt hate being with the seme he just hated the whole locked up situation. Its obvious they have loved each other for a longggg while now.
bro ive re-read this like 100 times help