Recommendations

Both have aliens living in Earth due to unexpected circumstances and hilariously trying to adapt.

In both the movies, the husband is scheming behind his wife's back.

I watched secret first and it's one of my favorite revenge dramas, but I have never seen such a blood boiling drama in all my life as QOA.

Gong HyoJin's amazing acting takes on a different, and slightly less 'intelligent' role in The Master's Sun - but pulls it off as flawlessly as she did her eccentric and complex character in It's OK, That's Love.
Both dramas have a lead character (Joong Won in The Master's Sun, Hae Soo in It's OK, That's Love) that sees themselves as a little bit superior and doesn't want to have much to do with the second lead initially, but turns into a comedic and cheeky relationship.
Both have psychological elements to them which can be very sad. Without giving too much away, a departing of a certain soul in TMS reminded me of a soul the metaphorically leaves in IOTL). They also deal with healing wounds and fixing problems of the past.
Both are funny and feel-good dramas.
TMS is a little more slow-paced but has a more complex plot; IOTL has more side-plots, a less complex main story but is more high-intensity and high-emotion.

These are both movies that can be easily recommended without giving another movie as an example, but both of these movies have similar themes. The biggest of which is probably injustice - the 'baddie' in the end, wins. The next biggest is family. The strong Father-Daughter relationship in both of these movies is touching and heart-wrenching at the same time. They both also a feel-good, but very sad movies. If you like one, I have no doubt the other would be to your taste.

If you like medical dramas, you definitely have to watch these two!

Both are procedural drama , that are well executed and written. They both clearly stand alone in there genre with IHYV taking the procedural action of incorporating a supernatural twist. But other than that they are two dramas that you will not want to miss.

If you only focused on the news coverage part then this two drama are very similar, then only difference may be that Pinocchio did a better job incorporating many of the potential boom that we sense in Spotlight but that at the time the writers and directors fail to bring to fruition. Still I feel that it a great idea to actually watch Spotlight because you get a better appreciation of Pinocchio.

Both about families with serious problems and broken bonds that someone comes to help them reconstruct their relationships and become a real family again.

Both are based on shoujo manga and the characters are kinda similar.

Both are based on shoujo manga and the characters are kinda similar.

Both are based on shoujo manga and the characters are kinda similar.

Both are based on shoujo manga and the characters are kinda similar.

The high school setting + the similar characters, they are based on shoujo manga anyway.

Both of them are based on shoujo manga which means high school romance etc.