The beast to the left, the gentleman to the right

Intro: Years ago, Ou Yunchen, once the Empire's strongest adopted son, narrowly escaped death while evading the pursuit of the 'Cleaners'! Unwilling to lose his claim to the imperial throne, his desire for revenge was reignited by the appearance of a mute girl! Be not merciful; if you cannot obtain it, then destroy it! This is his way of survival! Tonight, he is a hunter who will stop at nothing! "A beast never gives up on its prey, even with the slightest chance." "The mask of a gentleman, the vengeance of a beast, humanity on the left, desire on the right." This story is purely fictional and any resemblance to actual persons, living or dead, or actual events is purely coincidental. (The characters, places, events, mechanisms, backgrounds, etc. in this drama are all unrelated to reality.)