W

Both dramas have characters from fictional work cross over to the real world to harass the authors into changing their stories.

Two young people meet in a fantasy world in which different rules apply. They often switch from this world to their actual reality. Sometimes that creates problems with their surroundings and puts their family and friends in trouble.

W- two worlds this series also have a parallel world. Though there's an anime artist who's writing everyone's fate. Both are thrilling dramas. Lots of intense but Alice in Borderland still doesn't have any romance but in W it has. Lee Jong Suk is the ML.

In W the male lead is from an other World, and in Hit The Top he is coming from the past.
Though that was just the only similarity. They give absolutely different feels.

Both dramas involve one or more of the main characters from a manga/webtoon world that teleports to the real-life world. These manga/webtoon characters get into a romantic relationship with the real-life character.

plot wise its similar, female lead travels to the coming world, falls for the ml , if you liked W , give these drama a chance

Both dramas are about a ML who comes from another world (the past/a manga) to the modern world. In both the FL can influence/change events by writing or drawing them in a book/manga. Both couples have a list of romantic things the FL wants them to do. Both MLs begin to fade away, starting with their hands going transparent/able to pass through things. There is also a villain from the ML's world who ends up in the real/present world.

Space and time travel.
Romance.
Fantasy.
Trying to change the fate.
.........................................................

I felt Love Crossed had the vibe of W.
What happens in "W" is a girl gets into a comic world. She doesn't believe her eyes after getting a glimpse of the boy live. Similarly what happens in "Love crossed" a girl uses a game where she gets a virtual boyfriend and one day she somehow ends up entering a secret house where she finds the boy (her virtual bf look alike) who actually exists in real life.

In both, the ML is a manga character who enters the real world and the FL is a human from our world who has loved/been interested in the character since childhood.

When a total eclipse of the sun takes place, Go Ha Jin is transported back in time to the start of the Goryeo Dynasty of Korea during King Taejo's rule. She wakes up in the body of the 16-year-old Hae Soo and finds herself living in the house of the 8th Prince Wang Wook, who is married to Hae Soo's cousin. She soon befriends several of the princes and meets the ostracized 4th Prince, Wang So. Although knowing she should not get involved in palace intrigues over the succession to the throne, she inadvertently becomes a pawn in the struggle, as several of the Princes fall in love with her.

similar story, W is korean drama, Game Breaker (Dream breaker) is Chinese remake Movie.
in both Male Leads are super hot, tall, handsome guys ))

University student, Takatsuki Minato, likes things to be clean and in order while her stepbrother, Takatsuki Toru, is a bit of a player. One day, while cosplaying as a high-school student in a fashionable district in Tokyo, Minato accidentally bumps into Toru and quickly lies about her identity. To her surprise, Toru appears to take an interest in her alternate identity, Mina, and asks her out. Thinking that she might be able to cure Toru out of his playboy ways, Minato continues to disguise herself as Mina but will she be able to keep up the charade when she starts developing feelings for Toru?

"W " shows connection between cartoon world and real world
"Signal" shows connection between past and present world
both drama story is stop the crime or search for culprit

Both take place in different "worlds" - W has the real and the comic book world, and Will You Be There has the past and the future world.