Both are unpredictable and emotional, though mouse is not as emotional as Flower of evil but both the main male leads go through emotional turmoil.

Both these shows are similar in the way that they have people who were betrayed by their exes who now want to come back in their life.

They are similar in the way that they try to realistically portray the working lives of the main characters . The friendship (only 2 in the producers) & relationships are also similar. Overall, both are slice of life shows without exaggerating or being over the top.

They both are similar in the way that both men are working in similar fields and have their first interactions with babies/kids and the gossiping neighbours and it's fun to see how they deal with it.

Birth of a beauty has a more serious plot....but the male leads fall in love with the females while mentoring them, that's whats similar between the two dramas.