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...
So, Airen-san, what do you mean by difficult?
حسناً يا آيرين-سان، ماذا تقصدين بـ"صعبة"؟
Aber Airen-san,
was meintest du damit?
¿Por qué no será fácil, Airen?
¿Por qué no será fácil, Airen?
Qu’est-ce qui risque
d’être compliqué, Airen ?
Dimmi, Airen-san, che intendi per "complicato"?
Então, Airen, o que você
quer dizer com difícil?
Так что за трудности, Айрэн?