Both have time travel elements.
Both have people trying to alter their destinies.
Both have individuals which help those doing the time changing.

Has a similar airport setting and feel to the show. Only difference being 'Tokyo Airport' centers around an air traffic controller. However, you will notice similarities in regards to the different areas within an airport being called during the series.

The grandmother basically plays the same roles in both series, while both the series themselves are almost identical in terms of a 'revenge' series. The only difference being there is no 'time slip' and 'The Witch's Game' is a daytime melodrama with tons of episodes. Some people don't have the patience to watch that many episodes but if you like 'Perfect Marriage Revenge' and want to gobble more of that same feeling. Then 'The Witch's Game' will give you that vibe or dopamine rush to fulfill the spot.