I'm in Great Qian, and I Just Uncovered the Imperial Proclamation. Now You Want Me to Take the Throne?

You're in Great Qian, you've just answered the emperor's call for help, and now you're being forced to take the throne. What do you do? Looking at the critically ill empress, Qian Ying could only steel himself and step forward. But he was mistaken for a lecher who had dared to defile the empress. At the crucial moment, the empress woke up, and the duke, who had rushed in from outside, stopped the Grand Ancestor. By a twist of fate, Qian Ying's identity as the emperor's legitimate eldest son was exposed! The duke: “Your Majesty, about what you just said, executing nine generations of his family...” The Grand Ancestor: “Execute what nine generations? Put him on the throne! Immediately!” Qian Ying: “I just answered the emperor's call for help, and now I'm being forced to become emperor? Is there any justice in this world?”