>>279811018
You are the reason JP anime directors say it's pointless to market to EN people cause they spend all their time looking at the subtitles and miss what's going on on the screen.
While he's explaining that he originally planned to lie about it being poisoned but then realized it actually was poisoned it shows a flashback of him drinking the wine and then staring at his hand, indicating that that's the moment he realized it was poisoned.