Both Male Leads make you wonder of how dark they actually are. There always seems enough room to still think the best of them, keeping you guessing throughout most of "Born again". Will see how it is going in the currently airing "Flower of Evil".

Both dramas have quite the dark theme and are slow paced with emphasis on getting to know the characters, their life and emotions rather than action.
Both husbands keep secrets from their wives. "The World of the Married" focuses on the female leads character and how she deals after finding out the truth.

Short BL with multiple couples. The special thing about this one is that it is bilingual, they all are speaking/understanding both Chinese and Korean.

From the same makers of "Oh My General" it also makes you question gender roles and gives you some food for thought. It's also a comedy and very entertaining.