Recommendations

Both FLs come from the real world into a fictional, game-like world set in a hotel where they must complete various tasks and fall in love along the way.

Both are historical mini dramas in which the FL is from the spirit tribe and enters the human palace or sect in order to retrieve someone or something.

ML and FL both can repeatedly time travel but only back to a certain point in time to try to survive events that end in their deaths. They're the only ones who retain the memory of what happened before, and work together, first as allies, then friends, and then fall in love.

Both have a school setting with the two MLs slowly discovering their crush on the other.
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Both are historical/fantasy dramas and have a storyline or plot in which Ding Yu Xi portrays the ML who is a cat/human shapeshifter.

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Both follow a FL who move to the countryside after things that happen in their lives.
Both ML have bookstores and are very smart.

story of Min and June friends since high school. June is the first love of Min. Min try to keep a secret and try to keep away from June.
And In the day June has a problem, she wants Min pretend to be her girlfriend to tease her mom.

Thing in commun both are friends and where one is in love and thinking its one side love.
The difference is the plot.

If you liked dark humor and graphic violence in Heroes, you'll definitely enjoy Fearless Blood.

Fearless Blood is set in 1930s. Both dramas have a fairly high body count.

Both dramas are beautifully shot and while Heroes has unpredictable elements of Tarantino's movies, Fearless Blood is reminiscent of Fargo-esque storytelling.

Main lady is a temporary teacher who wasn’t interested in having kids before. She realises a student is being neglected at home and plots to kidnap her and raise her herself.

Both FLs are poor and outside the law (assassin vs. thief) and disguise as a eunuch to enter the palace. The emperor learns their secret and falls in love with them.

Both are light historical dramas in which the leads have a long forgotten childhood connection, the ML is now a colder, feared person, and the FL is cutesy and disguises as a boy to enter the house. Both have a love triangle.

Both FLs are spirited and a bit silly, and enter the palace disguised as eunuchs. The emperor discovers or knows their secret and falls in love with them.

Both FLs are spirited and a bit silly, and enter the palace disguised as eunuchs. The emperor discovers or knows their secret and falls in love with them.

Both FLs disguise as eunuchs to enter the palace, where a love triangle forms between her, a royal, and a nobleman.