1. Main characters deal with everyday struggles
2. Both are slice of life/comedy/romance shows
2. FOOD

Same male lead
slow paced, heartwarming and cozy feelings
realistic romance
relaxing dramas
bonus: really nice and catchy soundrack

both dramas are about shopping addict people
both main leads are from rich family
their lives changes ovenight and they must make money on their own

One Spring Night and Beacause This is My First Life have the same realistic feeling about life and romance. Story is calm and heartwarming.

Both leads are desperately trying to save their loved ones. Also, both are filled with suspense and mystery. Both are from OCN.

Both dramas are romance, fantasy, supernatural genre about characters who have ability to manipulate with time.

Both dramas are romance, fantasy, supernatural genre about characters who have ability to manipulate with time.

Both dramas are fantasy genres about characters who have ability to manipulate with time. ............

Both dramas are about food...........................................................................................

Japanese movie - If Cats Disappeared From the World and Korean drama - Imaginary Cat are about relationship to cats

Both are high school stories that revolve around school corruption, rich parents pressuring their students into attaining perfection, stress, violence, bullying, students with higher grades favored, power, status, etc

This movie is similar to this drama in transformating in another age.
In Chinese movie is old granny transformed to her 20 yo and in Korean drama is young woman suddenly old.