The ghost that suddenly appeared on the ship is Masaki's astral body.
After Jovia creates her body, Masaki leaves to check on her tree's grafting.
With the island's formation ongoing, 
Seina suggests that Tsukiko spends time in Kamidake's magic unit...
it would be that, while you can have sexual 
intercourse, you can't have children.
فهو في حين أنّك تستطيعين ممارسة
الجماع، إلّا أنّكِ لا تستطيعين إنجاب أطفال
sarebbe che non puoi avere figli, 
nonostante tu sia in grado di avere rapporti.
eu diria que apesar de poder ter
relações sexuais, não poderá ter filhos.