Unknown

Let me clarify first.

I am recommending Unknown not because of the ‘brotherhood theme’ not the ‘low social class’ things. Both definitely have different settings and I just want to highlight one thing which is the ‘gang’ or ‘mafia’ thingy.

We have Tew and Qian that works for this ‘gang’ to earn living and decided to stop. Why’s that? Let’s just say ‘FOR THE LOVE OF MY LIFE’. I believe the main purpose is to protect them.
And I really love both ‘gun scene’
We have Tew personally visiting the leader and challenged with this gun threat things.
On the other side, Qian’s one is that… legendary ‘touching’ scene whatsoever ^^

All in all I just love both scene so I would like to recommend this series as well~

One is M/F and the other BL but both have the theme of three kids (two boys and a girl) forming a family. Later on, one of the "siblings" falls in love with another, but the other "sibling" is initially uncomfortable with it.

It has the same director and production, so you can really feel the similarity in how it’s made. The visuals, tone, music, long shots and overall vibe are very close, so it almost feels like it exists in the same BL universe even if the stories aren’t actually connected.

This is a Chinese BL (which was cancelled so last episodes aren't available) and has a novel
This also has non blood related brothers' love trope
I also think this drama portraits a realistic poor environment just like Unknown
Also this drama has one sided obsessive lover too

Here are the main similarities:

?? 1. Relationships that evolve over time

Both stories follow relationships that develop across different stages of life rather than staying confined to one period. That gives the romance a sense of history and growth.

? 2. Emotional maturity

Neither series is simply about first love. Both explore how the characters change as they grow older and how those changes affect their relationship.

? 3. Strong lead performances

The emotional impact of both dramas depends heavily on the actors’ ability to convey subtle feelings, longing, and conflict.

? 4. Chemistry is the biggest strength

In both, many viewers praise the chemistry between the leads as one of the main reasons the romance feels believable.

? 5. Complex emotions

Both stories spend time exploring longing, misunderstandings, emotional vulnerability, and the challenges that come with deep attachment.

? 6. Character-focused storytelling

Rather than relying on constant plot twists, both invest heavily in the emotional journeys of the central characters.

-Plot is similar in both. Two boys grow up together, eventually develop feelings.
-The chemistry is amazing in both.
-Time of fever is a Korean BL. Unknown is a Taiwanese BL.
-Two of my absolute favorite BLs.

-Both have step-brother romance
-Both are Bl dramas

Both are about one of the MLs who was adopted having a long time, secret crush on his (non related) brother.

•Involvement with bad guys
•Innocent loveable ML
•Brother-sister relationship
•Orphan/Adopted ML

Both are Taiwanese BL
Relationship between stepbros
Older brother
More than family
A touching story of love and brotherhood
Not just cousins
Challenge to try not loving each other
End with a happy relationships

Side couple
Step brothers
Trauma of Tum and Tar
Forbidden love
The side couple of Tum and Tar is same forbidden love feelings, step brothers unrequited love.

I've been looking forward to this ever since I heard it would have a drama adaptation cause the novel is one of my favourite. I almost had a heart attack when I heard it was released ( for one hour). The drama did justice to the arcs and characters; the actors were perfectly cast and had great chemistry. However, they changed some things ( added some characters / removed some) and removed my favourite line, which made me a little upset. One thing I didn’t like was the change in the plot for the last doors. I was looking forward to seeing the plot twist from the novel, but because of censorship, they changed the concept to gaming, which also altered the plot twist. Nonetheless, the actors, actresses, and crew all did an excellent job. The songs were also great, and the script was very well done. I'm glad I lived long enough to watch this

both BL dramas, The Eighth Sense is korean while Unknown is taiwanese
both romance are following the path of two guys who are attracted to each other but not really knowing their true feelings
there's sometimes tension/cold moments between the 2 main characters & they both make me cry

Both have pseudo brothers (not blood related). In both dramas the younger one is the one who chases and the older one is in gay denial.
Moon and Dust is a cheaper production and it has a darker edge.