Recommendations

-Both are childhood acquaintances
- both have a hate-relationship because they started competing with each other as kids.
-main character is in love with someone else at first
-rivals to lovers

Another case of identity swap! A guy falls in love with a girl whom he thinks is someone else. Things happen which make him wonder but he never suspects the change in identity.

-LGBTQ+
-Japanese language film
-Explicit content
-Unlikely gay relationship develops

-LGBTQ+
-A man in a gay relationship is confused about what he wants i.e., if he wants to be with a man or a woman
-Japanese language film
-Complicated relationship

-LGBTQ+
-Japanese language film
-One man obsessed/in love with another who is more elusive with his feelings
-Explicit sexual content

The both series have master and disciple relationship and the sects in the both series fights for justice

~ Same two leads paired together yet in another drama of a not so completely different genre.
~ they have a good chemistry together

Both have the "Passionate young teacher" as the premise. Sawada and Kuma made an appearance in Yoiko no Mikata".

Both are censored same-sex adaptations.

Both fall in the mystery genre.

Both are historical dramas.

And both are wuxia.

The same genres: fantasy and historical.

Also, the main target / audience for both dramas is youth / new adult.

Also, similar use in CGI. The CGI in both dramas is in nearly every scene.

And they both have a setting / world that never existed in history, but was created for the purpose of the drama.

--both dramas have the main character seeking revenge on an injustice that they faced.
--at the end of the dramas, they both realized that there's more to it than just revenge and that it wasn't as satisfying as they thought that it would be.
--both main characters faced several hardships and adversities before they could become successful and establish themselves

They both have an idol moving in with a regular person. Although Love Online: Extra is bromance because of Chinese censorship but the 2 leads have really good chemistry like in HIStory: Stay Away from Me

It's not around a crime or a murder but...
This drama explores multiple aspects of marriage, to cheating, to divorce,
I don't really know how to describe that drama it was beautiful

but here's the summary : "Hyun Woo fell in love with Soo Yeon at first sight in college and they have been married for 8 years. He thought he had the perfect family, with Soo Yeon, who is a beautiful wife and a good mother to his beloved son. Then one day, Hyun Woo sees a hotel reservation message sent by a male stranger on Soo Yeon’s phone. Even though he tries not to think about it, proof after proof is revealed, which confirm that his wife is indeed having an affair. Since he firmly believes that he is a good husband and father, he can’t seem to forgive his wife. He blames her for putting the family in danger but then starts thinking, “Have I been a good husband to my wife?” "

There is cheating,crimes but more importantly this drama is blending of the individual cases/stories with a much larger ongoing story.

(it's an adaptation of the English drama but with the Korean touch)

"The story of two married couples in danger of unraveling as the husband and wife find themselves attracted to other people."
It's also about cheating .
but it goes more deep: it's about life, conflicts between responsibility to family and feelings

(it's starts a little slowly so watch a few episodes before giving up)