Recommendations

Both are short japanese indie/low budget dramas uploaded to youtube with subs. Both feature a romance between two guys too.
Shujin-Ko, though, focuses on multiple mains and on college/university students while colors is about 30ys/40ys and more "grown" struggles.

Raw, devastating, brutal coming of age stories. Focus lies on several (queer) high school students who have to deal with (extreme) school bullying, homophobia, having to hide their identity and struggling to open up to others, and even S/A. Theres kind of a romance between two characters and some solidarity/friendship building but dont expect happy endings for all.

Both are short and sweet japanese gay love stories. Male lead, despite being thirty years old, has not made any sexual experiences ever, is very inexperienced when it comes to love and generally a little socially awkward. After he turns thirty, though, he becomes unexpectedly involved with another guy whom he works with.
(Plus theres a delivery guy side character in both)
Colors is less of a romance, though, and more of a slice of life story.

Married to My Enemy is the special episode(s) for Enemies with Benefits. You will need watch that before this.

Both are short indie boys love dramas from Japan. The main characters are adults working in/with media (book, film).
- Characters meet again.
- Same director
- similar title lol both about colors

Both are very good korean movies.
Both have sad endings.
Both of them have subthemes of friendship.
One of the main characters like things such as art and photography.
Have highschool themes.

similar concept of several people from different backgrounds living under one roof, for relatively long time, doing various things together

Both are a sci-fi genre that include dream escapade.
AiB3 does really remind me of this one than its 1st season cause both faced the "game/dream" mastermind.

similar concept of several people from different backgrounds (mostly actors and idols) living under one roof

These movies:
- are about lesbian life
- have the same calm vibe
- the sea features in them
- have similar sad themes

No news on the adaptation so I’m purely talking about the book; Breaking Through the Clouds (Po Yun) which is BL.

‘Enemies to Lovers’, hidden identity, leads who were fated to meet each other one day in the same line of work. The shou was then recruited in order to investigate a series of crimes that seems to link back to the past, resurfacing events far beyond his control involving more than just corruption, involvement of drugs and his heart.

(Also since Turkish ones can’t be added, check out Yargi. It’s straight but the ml is a prosecutor who married a lawyer wife. Very suspenseful, intense, and brains lol).

In her last year in her twenties, Moka (29), the heroine who is anxious to get married, suddenly finds herself face-to-face with Min U (25), a man straight out of a Korean drama. He's a younger man with perfect looks, and apparently, he's also the heir to a wealthy family... While Moka's heart is thrown into turmoil by this sudden "out of the ordinary," she also has the presence of her childhood friend, Souta, a chef with a somewhat clumsy kindness. Torn between the sweet and smooth Korean style of approach and the quiet and honest feelings of a Japanese man, what kind of "true love" will Moka find? Now, a new love story that transcends Japan and Korea begins.

A young girl who contemplates suicide by jumping off a building meets a wounded ghost. The bleeding ghost is an assassin, and they will go through several cases.

Hinata is a journalist who aspires to be a writer. Yeong Su is Set up to take over his father's Hotel chain but is an aspiring artist. They meet while she is in Koreaon temporary assignment for her job and they get off on the wrong foot. However, when Yeong Su goes to Japan for business, he ends up causing a media frenzy and disappears, much to his advisor's horror. They bump into each other on the street and she brings him home, to her boyfriends dismay. As they slowly fall in love, a large number of obstacles stand in their way, the least of which is their different nationalities. This is a "Mobile" drama which means it is a movie sliced into 12 episodes

After a devastating failure as a spatial designer in South Korea, Lee Yu Bin retreats to a remote Japanese island to start over. There, he meets Shirahama Karin, a strawberry farmer living with a mysterious illness. Though they come from different countries and lead completely opposite lives, their chance encounter blossoms into a heartfelt cross-border love story that changes them both.