>>281762313
>does it jump around in time?
No, there are some flashbacks but the main story is now set in present time, 20 years after Hannah and Enoah left the island.
>Or is that it from the earlier characters?
We see them a few more times, especially Enoah towards the end of the manga, but you can consider Elijah the main character from now on.
>And is there anything more about Enoah's father
Nope, his part is over.