Seems like it... although im curious if it was a "manipulate the grand Duke into feeling a different way" or a "making him mishear what the grand Duke said" situation
so most likely the grand duke said shi like i love you but to the mc they changed it so he heard sm like i hate you ahdahshah ahahhahaha hahahaha HELPMELMAO
Yup, exactly that. That's why ML is so confused and "hates" mc, bcs even though he reciprocated his feeling, and confessed too, MC looked betrayed and left ... so ML was confused af and it tunred into "resentment"
Wait, so does that mean that the guides basically changed the answer of what the grand Duke said?