In both a female lead feels insecure about herself and relationship because she has to deal with mean remarks about her weight from random people.
Other than that both are comedic, romantic web dramas with two seasons each.
Both are short korean mini dramas that also discuss more serious topics/social problems and kind of teach the viewers to stick up for themselves. Both have romantic and comedic elements as well. The overall tone feels similar. The screenwriter is the same too.