Recommendations

Both dramas are japanese BLs adapted from mangas where the story takes place in school.
Based on the source material both dramas has complex characters which were shaped and influenced by the life experiences they have as kids.

Both movies are japanese BL movies where the characters are struggling with trusting each other because of their past experiences, but are still attracted to each other, and is not easily for them to forget each other.

Both movies are japanese BL movies with characters that were really hurt by past experiences and while trying to keep themselves together, they are confused and don t open themselves easily to others.

Both movies are japanese BL movies that has more realistic stories than other japanese BLs i watched, and the characters in both movies has their own issues to overcome and are really vulnerable emotionally.

Both movies are japanese BLs which has psychological and really realistic stories with characters that are messed up psychologically, who become better persons by meeting each other and influencing each other to overcome their insecurities.

Both movies are japanese BL movies that has more dark and psychological stories which includes rape and sexual assault. In Sing in love, one character is sexually assaulted and while the context is a bIt different from Dangerous Drugs of Sex, both are psychological and healing movies.

The moments that bring happy and sad feelings to you are not entirely separate and both are precious. You can lose something but still have that very thing with you your whole life. Timing matters. Both these movies drive this message home very well. Whether you experienced lost love or not, you can empathize with the characters.

They're similar in that they both revolve around the concept of celebrities working hospitality jobs.

Both Tokyo Airport & Good Luck include airport/aviation themes, as well as novice and on-the-job training themes.

The 3 seasons (22 eps) of Seirei no Moribito and Arthdal both have epic-scale worldbuilding from a time long ago with tribes/villages with their own unique lore being important to the story and its main characters as it evolves. Both male leads come from noble/royal lineage of a sort and have 'magical'/superpower-like abilities and both stories have a lot of mysticism in them. The biggest distinction would be the female leads-in Seirei no Moribito, the FL is a 'bodyguard' who has incredible physical capabilities, so the action is intense. Both FLs have tragedy in their backstories though they're very different kinds of tragedies.

Both will sweep you into another world in another era and convincingly craft an entire "world" within the obvious confines that in that time neither place would have, in theory, had much knowledge of anywhere beyond the area right around them even though both have multiple tribes/kingdoms represented in the area that is, nevertheless, vast-seeming despite the Korean peninsula and Japan both being quite small to us now as we understand the universe better.

FWIW, some of the complaints against Arthdal's plot won't likely be present for Moribito... the only pity about Moribito is that I can't find the HD versions (it was shot in 4k resolution, so that being reduced to 540p or 720p is quite a tragedy for something that beautiful with such sweeping landscapes).

Both, have strong female and male leads who are both morally gray. They also relate to themes of justice, major corporations, revenge, murder, death, among other dark topics with also humor laced between it.

In both 'immoral' people start dying under mysterious circustances and people think it's God's judgement and this becomes a cult.

both dramas are about time/incident loop where the looping process happens to be the only main protogonist and they try to save their loved one and themselves from that disaster.

So based on the trailer it looks like it takes place in a seaside town.
Both star shin min ah
Both have likable side characters
both healing dramas
Family/life vibe

Are We Alright is similar to Kor Kerd Mai Klai Klai Ter because of the age gap between the young man and the older woman who finally fall in love with each other.