The Heir: Killing the Prince from the Start Is Only Reasonable

The 844th year of the Great Qian dynasty.

Lin Guoyu is an undercover agent in the Prince's residence.

He watches helplessly as a ruthless killer poisons and incapacitates everyone, then slaughters every last person in the Prince of Yongan's residence, sparing only him.

As an undercover agent posing as the Prince's illegitimate son, he never even gets a chance to see the killer's true face.

That night, the Qian Emperor sends the Grand Commander of the Mirror Bureau to question him.

"Lin Guoyu, you've got a pretty quick blade!"