Recommendations

Both dramas tackle a darker theme, crazy gripping action scenes, will have you on the edge of your seat at all times, a believable romance that is not the main plot line, and REALLY GOOD ACTING.

Both have Contract Relationships
The ML is rich while the FL isn't
Both had an incident occur which lead to them to temporarily maintain a contract cooperative marriage relationship.
Zhao Shu Zhen plays the grandmother to both ML's

Both tokusatsu show revolve around the villains trying to get a kind of energy from a source (the Enetron for Go-Busters and Victorium for Ginga S) in order to power up the big bad of their respective series. A special defense team is set to combat these threats.

Both are detective style drama. One to find out the death of his mother while the other to solve the mystery of the death of his master. Both also deal with forensic doctors and police .

-They both have similar female leads.
-They start living together with F lead's efforts for their marriage.
-There is a side female role like the doctor in it's okay to be okay.
-Both female leads are rich and generous

Go Se Won stars in both dramas? Both dramas are over 100 episodes. A family drama about a woman who is hurt by love, striving for small happiness and realizing the preciousness of family.

Both feature time slip time travel where ML and FL can travel to each other's time, subtly influencing and changing events.

Short length dramas (film vs. short series) featuring a love story, time travel, and changing fate.
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Short length (film vs. short drama) love stories where the main couple are brought together by time travel, and changing past events.

Both are short (film vs. movie length) dramas featuring time travel, and changing past events for the future. Both have open, but satisfying endings.

Both are Chinese dramas with a love story based upon time travel and changing fate.
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Both are subtly romantic stories featuring unusual forms of time travel (time slip vs. time loop) where the FL and ML must work together to change fate.

Both are short dramas involving time travelers trying to save a life/lives. Both have unexpected twists.

Both dramas involve time travel and trying to change fate to prevent death(s). Both have a subtle romance between the main couple.

FL time travels and returns to her younger self and falls in love with the ML. Both FLs then try to undo a death (FL's mother vs. ML's). Both are school setting. The FL has met the ML in the past but doesn't know/remember it until much later after she time travels.