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...
Just like that.
هكذا فحسب
So in der Art.
Tal que así.
Tal que así.
Tu vois le principe.
Proprio in questo modo.
Isso mesmo.
Вот так вот.