The Secret Romantic Guesthouse (2023)

=> 3 male leads and one female lead sageuk drama
=> According to Secret Romantic Guesthouse's plot summary, the four friends will work together. It was basically the plot of Sunkgyunkwan Scandal in the latter episodes.
=> The male leads in Secret Romantic Guesthouse and all the main characters in Sungkyunkwn Scandals are young scholars.

859 AD. The once-great Tang Dynasty is now declining. Numerous rebel groups have formed, the largest of which is the House of Flying Daggers, based in Feng Tian county. They steal from the rich and give to the poor, gaining the support of people. The local deputies have managed to kill their former leader, but the rebel group only becomes stronger, due to a mysterious new one. Jin and Liu, two police captains, are ordered to kill the new leader within ten days.

Both are historical and centered around three MLs and one FL. At least one of the MLs seems to have/has secrets about his past. Both dramas have a similar tone.

• Both are Historical Fictions
• Both have a confident and kind female leads
• Both have a protective and skilled swordsman male leads
• Both male leads have a hidden identities
• Both female leads live a life atypical from the Joseon noblewoman norm because of a family disaster.
• Both are slow, sweet romances
• Both work to help secure the royal family with investigation(s)
• Both have a happy ending

Sinilarities:
- Both are historical dramas with comical elements.
- FL in both dramas is surrounded by multiple MLs with whom she forms a friendship.
- MLs have a hidden past / agenda.
- There is a love triangle in both but in H it's more present than in TSRG

Both are historical dramas with smart, resourceful female lead who makes her own way in the world. Both feature a mix of comedy, romance and political struggle.

Both sageuk portrays independent FL falling for the ML without knowing their real identity, and has very interesting characters and relations surrounding them. Also includes the unavoidable political plotline every historical drama has. There's a good balance of humour and seriousness.

Both are historical dramas in which the ML is a prince who ends up on the run outside the palace, and helped by the FL who is unaware of his identity. Both MLs have a half brother who palace people are scheming to put on the throne in his place.

Both share a FL running an inn/boarding house, a ML who lost his father which causes him to hide his identity, & a family secret.