The Main Characters That Only I Know - Chapter 300:

After all, transmigrators of this era were no simple matter. Some became slimes, others turned into treasure chest monsters, and some were even reduced to mere skull--such things were all commonplace.It was nothing more than playing a villain, Shiayar didn't care. Wasn't it only natural to pay some price to become stronger?[Destined Great Villain System][“Let this world feel the agony!”][Newcomer Mission: Let the young and naive Grand Duke's daughter of the Azure Garden Dukedom, Miss Silvia, experience the betrayal of her loved ones and, amidst the pain and despair, complete her transformation and rebirth.]

“I’ve been possessed into the controversial makjang drama ‘Gwangin’ (The Lunatic). Of all roles, I’m the omega secretary to an alpha with omega-phobia. It’s hard enough hiding my identity, but I’m also in charge of all sorts of annoying tasks: managing the protagonist’s diet, wardrobe, and house; coaxing and soothing the beta he loves. My goal is to survive until the ending where the protagonist meets the strange beta who thinks even his obsession is love, leading to a happy ending… I think I smell an omega somewhere.’ ‘That’s… impossible.’ If I speak carelessly, I die. If I mess up my work, I die. If I run away, I die. And if the fact that I’m an omega is revealed… I really die. ‘Right. It shouldn’t be possible, but that’s why I feel so f*cking awful, Secretary Kim.’ Will I be able to make it back alive…?”

The “Dog Emperor” gets adopted by his fake “Favored Consort.” This story follows their story as they experiences all sorts of trials in the imperial harem and find true love.

The dog king will recover his human body.

This is not a legitimate harem drama novel – there will be love, there will be pampering.

Enormous silver platters, shocking melodramas, all part of the package.

Looking at his own concubines and imperial offspring from a doggy’s perspective:

Who used to be the sweet and gentle eloquent flower turns out to be a venus fly trap behind the scenes.

Who used to be the filial and courteous, intelligent and adorable imperial princes and princesses transform into demons in a flash.

The progression (of the story) overturns understandings and unmask countless illusions.

But by the protection of the gods, the dog emperor met a healing owner. Although the path is rough, the end is pleasant.

- Description from Novelupdates

Gods and demons are everywhere in the Grand Desolate World.