I Am a Commoner in Troubled Times, but the Prince Forces Me to Ascend the Throne

[Troubled times + dynasty + farming + intrigue + war + no system] The decline of a prosperous age, the decline of a dynasty. I just wanted to be a commoner living in these troubled times, be a romantic young rich gentry, and marry a wife who would be hot on the bed, but the prince insists on marrying his daughter to me? Ah? No, it turns out that I am the prince myself? Ah? No, the prince is not good enough? Do you still want me to be emperor? God, are you kidding me? Why didn't you tell me such an awesome identity earlier? I can't decide my identity, but I can decide my life! And, the fate of this dynasty!