Kaito
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Arandor voted against Wolfstet. Wolfstet cast a vote against Igla based on a hint from Kaito. Among those who voted against Igla was the White King.
Total: White King – Kaito, Wolf, Yashchur, Lorelei (Black), Nefela.
Therefore, there are four candidates for the role of White King. And it's easier to identify the White King than the Black King.
Thus, Arandor votes against Wolfstet specifically as against the White King, or at least with that hope.
Added 5 minutes later
Gentlemen, what do you think about Gur and the riddle related to him?
Total: White King – Kaito, Wolf, Yashchur, Lorelei (Black), Nefela.
Therefore, there are four candidates for the role of White King. And it's easier to identify the White King than the Black King.
Thus, Arandor votes against Wolfstet specifically as against the White King, or at least with that hope.
Added 5 minutes later
Gentlemen, what do you think about Gur and the riddle related to him?
Кто не спрятался, я не виноват.