[1) If the twins aren't really twins then what explanation is there for Sophie and Josh's connections, like physically feeling each other's pains? Such as:
2) How did Sophie and Josh become immortal in the end?
3) How did Niten manage to save Aoife?
4) Why did the hook form over Josh's hand? There really seemed no explanation for that phenomena.
5) How did Josh manage to live without breathing or pumping blood?]
1) they were ultimately gold and silver twins and therefore related through their auras and the prophecy
2) josh became death, and not sure about sophie
3) my guess is scatty saved her because she mentioned she wanted to survive the war bc she was the only one who could save aofie
4) the 4 swords formed the hook
5) he was death
hope i helped