beta
It is a historical bl/yaoi manhwa, I think the seme is an emperor and the uke is his baby sittrr when he's young.
The palace is full of ghosts/demons but they seem like normal people when its day time. But at night they show their true forms. The emperor kills them, and so he has bad reputation for "killing" people. His babysitter cameback to the palace he tries to calm and understand why the kid he raised became like that or something. The emperor also has powers and he has pet demons/spirits in form of an animal i forgot its they are squirrel or foxes.