@Koko_sly
Spoiler!
It means yeohyun from five years later is still dead and the corrent one is just a clone who will vanish after five years, because yujin turned back time the dead people wont go back with him as live people, they are dead.
And the one who realized his other self from five years later is hyunjae
And the one who realized his other self from five years later is hyunjae
