Historical CDramas with schemming courtiers and good emperor supporting characters?

I’m in a mood for a drama with: - schemming/corrupt/evil courtiers - good emperor (but as a support character, not a main character), preferably older dude, kinda fatherly/grandfaderly figure - main characters uncovering all the plots at court - happy ending (or at least open ending).

Can be comedy, detective story, romance, pretty much any subgenre.

Some dramas I’ve watched and enjoyed: Blossom, Destined, The Double, General’s Lady, Royal Rumours, Rebel Princess. What I didn’t like: Love Like The Galaxy (FL was too immature and annoying), Melody of the Golden Age (ML was too much of an A-hole)