The manga is still in the prelude of the story, still before the time skip to the start of original game story
And in the latest novel, He's still surviving well while fighting all the death flags thats coming to him
And based on latest novel, theres 2 future possibility ending; (not yet happen)
1.the original harold inside mc body sacrifice his life force giving the mc to win the final battle, and story end with good ending
Or
2.they win the final battle, but mc died, and return to original world and meet up with erica