Love with Flaws

I believe that the overall atmosphere and mood is similar, along with the plot. Both dramas also follow the rich man and poor girl cliché and there is no villain.

Both are very funny romantic dramas that deals with office drama and have a secondary character, which is gay. Both have a great friendships between women and the cohabitation of a couple of friends. The male lead have one great friend also. Male and female lead are quirky and strange people.

Both dramas contain characters which work within a school environment. Whilst love with flaws is more lightheaded being a romantic comedy, black dog is more serious in detecting the issues faced within schools.

Both are love stories, which starts with two childhood sweethearts. He is the chubby one at first.. a misunderstanding.. causes them to believe they don't like each other and years later when he is slim and famous..
They discover their feelings again.

Both are basically the same story, but with reversed genders.

One of them was chubby.. the other one tried to confes (when they were in middle school), but the chubby one misunderstood the confesion as a mockery.. when the other one tried to clear the misunderstanding.. a terrible incident happened to his family and caused him a long-life trauma.

They re-unite years later to fall in lonpve again.