Recommendations

both are in the chinese republican era and they are short series
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both are in the chinese republican era and they are short series
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both are in the chinese republican era; one is short series and one is long series
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both are in the chinese republican era and they are short series
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both are in the chinese republican era and they are short series
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both are in the chinese republican era and they are short series
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both are in the chinese republican era and they are short series
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I really like the way south korea makes these beautiful BLs, where everything is just so clean and clear visually, and the acting isn't over the top. Jazz for Two and Light on Me are two of those for me. Both in a school setting with some similar tropes.

I wouldn't say this drama has a similar storyline with About Time but I believe the 'time' written on FL wrist has a same font as those in About Time. Just that the time didn't move here in Perfect Marriage Revenge...

Both films portray desperate parents trying to save their family from an uncontrollable situation. Hard Hit is a tense film from start to finish and it's well worth it.

Similarities:
- transmigration from modern world to a novel.
- gender reverse roles (both cities are run by women).
- frenemies to lovers (both male leads pretend to be friendly but have secret plans).
- revenge and political intrigue plots.
- both are mostly light-hearted with great comedy moments + a bit of angst towards the end.

They are both short dramas with a love triangle of sorts involved. Both have a misunderstanding between the main dating couple but the endings are different as well as the relationship dynamics between the parties involved in the relationship.

Oh they both also involve acting as the major of choice for the students

In both dramas, there is a body swap between a policewoman and a criminal. I would say Room No.9 is darker than Tengoku to Jigoku: Psychona Futari, which is more humorous at times, but still pretty intense and dark.

Both drama about a group of high school students and their friendship in small town in late 90s, the crime in the town including mystery, murder and death.

If you like to see just actors falling in love on set, you won't get that (jk)
Double is not a BL, it goes further than that, is about how the codependency takara feels for yujin after he "saves him" from the lowest he's been and gives him a new purpose, and about how yujin's quiet resentment fights whatever he might feel for takara, because despite loving him, he accidentally shaped him into a better actor he could ever be. It's a show that will make you feel A LOT, so if you have time, why not giving it a try?