Both movies have a very similar concept. Plot is set in present time but occasional flashbacks to the past to explain the story. Both leads have very unfortunate endings which are revealed very early into the movies.

The most similar part is in the iconic lines. In "Love Letter" which shows the female lead shouting "How are you? I'm fine" into the wilderness while "I want to eat your pancreas" is the iconic line in the movie. Both lines will leave extremely deep impression in the viewer.

Both dramas portray a female lead who is pregnant before marriage. Both of them explain their decisions for keeping the child despite the difficulties present in the society for single mother. Virgin Road is more romance centric while Magerarenai Onna shows how the female lead learns to make friends and how she improves herself over time.

Male lead in Virgin Road participates in the contract relationship for his job. Similarly, female lead in Hanayome wa Yakudoshi participates in the contract relationship for her job as well. Both of them managed to build good relationship with their partner's family over time. However, Virgin Road focused more on the romance between the leads while Hanayome wa Yakudoshi focused more on the family.