[LROlsson]

Originally Posted by tsunade666

what is akuruturuka?

Is Vrai the main antagonist of this series?

Akuruturuka is the group name for people with "fake" Hakuoro masks, that will say Oshutoru, Mikazuchi, Munechika and Vrai.

Vrai is the last boss of Itsuwari, but he isn't the main antagonist.

Spoiler:

Vrai starts to go completely off rails with the death of the Emperor and doesn't see Anju as a worthy successor. So Anju had two options towards Vrai, become his puppet or die.
Think of Vrai being a crazy dog that the real Antagonists let loose. The identity of the main antagonist is never reveled but there are three people I suspect can be it.
First is Uoshisu, he is very suspect with how he dealt with the situation after the Emperor's death. He found the poison in Oshutoru's home, He asked leading questions to Anju to make it seem like Oshutoru was the one giving Anju the poisoned tea, and Vrai over heard Oushisu talking about Oshutoru might have poisoned the Emperor.
The second one is Honoka, she is completely gone, and is believed to have cooperate with Oshutoru to poison the Emperor. I don't think she did it, but it's a possibility.
And the third is the Emperor, since it would be easy for him to create a fake corpse, the problem is that I can't think of a motive.