Both focus on the interactions between the poor and the rich. In fact, the word "parasite" is uttered by the rich people in "My Wonderful Life" many times. I'd say that Parasite is darker for sure, and My Wonderful Life is more realistic.

Cute, comfortable shows where friends enjoy good meals. Contains a lot of hot food and will give you a warm, fuzzy feeling during and after watching. Both are great to watch in late fall and winter.

Both feature a main lead who is a hardworking woman, and both have similar vibes in their comedy (the sitcom-type feeling, for sure).

Both are socially aware films that focus on discrimination and oppression of those who are weak in society (those who are poor or those who are immigrants or unattractive).

Ethically questionable science appears throughout both dramas, and characters struggle to find out their past through fragmented memories.