Why Are You Trying to Fight for My Little Bodyguard?

[Travel + fictional history + management + wits and tactics + counter-routine + pretense and slap in the face + no system] The rich young master Lin Ze accidentally wore the body of an ancient bodyguard, and his own lady was the "villain's daughter" in the novel about breaking off an engagement! Realizing that he was likely to become cannon fodder, Lin Ze decided to help his young lady complete the counterattack. But as things develop, Lin Ze slowly uncovers the layers of conspiracy behind the breakup of the engagement. Lin Ze is a top academic who is proficient in science, literature, engineering, and business. Let's see how he reaches the top step by step.