Detective of Great Scenery: Starting from Becoming the Demon Suppressing Guard

When Li Qingxiao woke up, he found that he and his wife were wanted by the court. "Disciple, since your master is dead, why not..." Master, don't be like this. I just want to solve the case as soon as possible. You don't want Master to die in peace, right?  Li Qingxiao solved a strange case and saved his junior sister from danger. "Senior brother, I have nothing to repay, I can only..." Junior sister, don't be like this, I save people to kill demons and restore peace to the world. Li Qingxiao was the most outstanding person in the world and was recommended by the charming princess to join the imperial demon guard. "I order you to go into the boudoir alone at night, and discuss important cases..." Princess, don't do this! I just want to investigate the case seriously and be a free and easy detective! Listen to the wind and rain with a sword, watch the rivers and lakes with a smile...