The Ferocious Legitimate Heir

Tang Yi transmigrates into the body of an ancient official's son and wakes up in his sister-in-law's bed from the start. He thinks nothing could be better than his sister-in-law, but then a group of burly men rushes in, intent on killing him as a sacrifice to Heaven. Only then does Tang Yi realize he's been set up: his sister-in-law and wicked stepmother have conspired to get him killed. How could a modern special forces king just surrender without a fight? He strikes back on the spot! He pins his sister-in-law to the ground, gives his stepmother a face-slapping, and leaves the court officials unable to take care of themselves... becoming the living King of Hell across the entire Great Yan! Sister-in-law: "He's too strong. I give in. Please spare me." Stepmother: "Ahhh... He's useless, so why won't he die? No matter how many times I try, I can't kill him!" Father: "What? My useless son has become my strongest enemy? Heaven, are you messing with me?" The ministers: "We can't take it anymore! Heaven, why don't you send down a bolt of lightning and strike that damn troublemaker dead?" The emperor: "Hmm, I hear some ministers and enemies have been making too much trouble lately? Why are you telling me? Shut the doors and let Tang Yi handle it..."