W (2016)

Oh Sung Moo, the father of cardiothoracic surgeon Oh Yeon Joo, mysteriously goes missing while writing the last chapter of his webtoon "W". Yeon Joo goes to his office looking, but a hand from his monitor suddenly pulls her in, and she finds herself on the rooftop of a building, next to a bloodied man. She manages to save the person, only to realize that he is Kang Cheol, the main character of her father's webtoon. Yeon Joo later discovers she can only enter and leave the webtoon depending on Kang Cheol's feelings.

In both, the ML is a character in a manga.
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Very different shows but gave me a similar feeling.

In My Holo Love, she believes she's in love with an holographic AI and has difficulties because she wants physical intimacy of another person.

In W she falls for a comic book character and suffers separation when they're apart in different worlds.

It's a Chinese remake of the Kdrama W.
Wu Yan Zhu, a trainee doctor in the real world, who accidentally broke into the world of the comic "W", drawn by her father Wu Cheng Wu, met the comic actor Jiang Zhe, and a series of thrilling events and sweet love story begins.

Both main characters end up in comics and make their own story as it is being written on the go. Only the genders are reversed.

Manga character comes to the real world, falls in love with FL who is a manga artist/artist's daughter. The manga characters "fade" as the artist draws/changes things, and there is a villain in the real world who is also from the manga world.

Its a little bit similar in diferent situations, while in W she tries to save the male lead from dying beacuse of the comic, im Lovely horribly she tries to save the main male lead from dying from his own fate, with the drama she's writting.

Both dramas have a strong sense of suspense, with big cliffhangers as the story progresses. Script writing/web-drama drawing plays a big role in what happens to the characters throughout the dramas--in ways that effect reality greatly.

Both male leads are intelligent, capable, and have a tragic, mysterious past haunting them. They are devoted to unraveling this mystery. Both have been wronged by the female lead's male guardian and have similar confrontation scenes with him. Both female leads are warm and make the male lead believe there can be something good in his life. (Spoiler: W has a happy ending; The Smile Has Left Your Eyes does not.)

Next Stop Your World is a Chinese/Cdrama remake of W.
The only difference is the length or duration of each episode. The Cdrama is a short-length series while the Kdrama is a full-length series.

These two dramas have similar complexity based on different concepts. Parallel worlds and thriller mystery are involved in both dramas.

Both involving Webtoon character coming to life. One is the romance with the author while the other is the author's daughter. They are both trying to get a happy ending.

Both dramas deal with switching between 'worlds', along with solving a mystery and chasing a killer. The romance is sweet, yet sad. Both dramas also deal with memory loss, caused by the timeskipping/switching of worlds.

it's kinda similar to this drama but that's only with the whole two different world things I recommend reading some reviews.
The drama is about a girl named Claire Duncan who is absolutely addicted to watching her all time favorite Korean Drama "Taste of Love" and wishes she could live in a world exactly like that, when suddenly she finds herself in the so called "DRAMAWORLD" where she meets another facilitator by the name of Seth Ko who's a waiter in which you think wouldn't hurt a fly but is he really all he seems to be?

This is also a lee jong suk drama.The story is much more compelling and competitive.. U will race with the time. Like in W here also the growing romance between the two leads r very much cooler. Also the ending is much more adorable which I felt a little lack in W... Pinocchio really amazing media drama....