Spoil me please!!!

I honestly dont think there will be anything said but the tea will drug him in some way to either miss the meeting or look favorably on what he wants. ε=ε=(ノ≧∇≦)ノ

THANK YOUUUUHH ヾ(❀╹◡╹)ﾉ~

I dont know for sure!!
Its just my guess since he keeps emphasizing for the emperor to finish his drink first...

No, the tea's not drugged, it's just soothing tea.ヾ(❀╹◡╹)ﾉ~

The conversation Perez has with the Emperor is about the Brown family—basically the conclusion of what the Empress wanted to know. SHE doesn't know what happened to the Browns, but PEREZ knows, and talking about it to the Emperor could be considered a threat... hence the soothing tea. (⌒▽⌒)

Yes I know the convo is about the browns but just the way he emphasized that he needed to drink ALL the tea before he told him about it has be curious~

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Perez tells him that the Ruler of the West (?) will change from Angenas to Brown, just to give him a heads up, not to side with his wife.
And there is something in his tea, but it's actually antidote, he doesn't tell him about that though.