Im pretty sure Uno still had to drink eventhough he knew it was spiked because of the rules of the game. he could either NOT drink and leave but he'll still have no answers, so his ONLY way to get information was to drink. If you look back at the chapter, Uno stops at grabbing his own drink and instead grabs the cup that was Lorenzo's and Enzo smiled because he thought that was cute/smart of him. LASTLY, I don't think Uno knew 100% the drink was spiked until the 2nd cup and then slammed the cup down before chugging the 3rd one
Im pretty sure Uno still had to drink eventhough he knew it was spiked because of the rules of the game. he could either NOT drink and leave but he'll still have no answers, so his ONLY way to get information was to drink. If you look back at the chapter, Uno stops at grabbing his own drink and instead grabs the cup that was Lorenzo's and Enzo smiled because he thought that was cute/smart of him. LASTLY, I don't think Uno knew 100% the drink was spiked until the 2nd cup and then slammed the cup down before chugging the 3rd one