Recommendations

Both portray multiple families in the same complex/building with their own problem (coincidentally, both also have homosexual couple). While Residential complex main couple having problem in conceiving baby, chiikami's on the opposite having problem about divorce promise the couple made decades ago.

Both series centered around main characters trying to start and manage their own business, then falling in love with their co-workers. Both series have a half-black character and a gender nonconforming character working for said business. Also in both of them the main character's very beautiful and successful ex-girlfriend shows up. And both have a scene when the main character wears an animal costume to attract costumers.

Same FL actress, ML doesn't like the FL at first but falls for her kindness, the couple separates because the ML leaves because due to legal issues, the couple reunites after a time skip and rekindle their relationship.

Both dramas feature serial killings by a victim of an old unsolved case. Both have police force teams created to solve the case, with the main leaders all involved in the said old case. Both also have a psychologist supporting char/ML pretty involved in the investigation. There is a similar relationship between the two MLs: one older ML who was briefly acquainted with the younger ML by chance through an old case. No real bromance in either :(

Both dramas feature serial killings by a victim of an old unsolved case. Both have special task force teams created to solve the case, with the main leaders all involved in the said old case. Though in Serial Homicide, there is slight bromance, and romance, there's none (bromance/romance) in The Abyss. The 2ML-1FL triad is consistent in both.

Both dramas feature serial killings by a victim of an old unsolved case, with a bigger mastermind later revealed behind the scenes. Both have special task force teams created to solve the case, with the main leaders all involved in the said old case. Both also have a psychologist supporting char pretty involved in the investigation. Though in Desire Catcher, there is bromance, there's none (bromance/romance) in The Abyss.
Would def say Desire Catcher was great though!

I think this drama may be little similar to The greatest love. As in both drama, the male actors portray role of a top class korean actor. And female leads are from middle class background . Main actor is rich rude arrogant. He accidentally meet female , fight become enemies and later on fall for each other.
I guess may be this drama may be like the greatest love kdrama.
So I recommended it. And believe me it's one of the best my favourite Kdrama. Love the story cast ost!!

While I was watching FH, the political drama really reminded of LLTG.
Both ML are excellent fighters and command an army.
Both ML have issues with their dads due to their parents' marriages.
FL is engaged to someone else before getting together with the ML

Differences
IN FH the ML is a prince but LLTG he is a general, even if very close to the king
FL in FH is a fighter but LLTG she is Court lady.

Similarities:
ML and FL are from rival kingdoms
Both leads are excellent fighters
power struggle in ML kingdom and politics
Not a lot of misunderstandings between the leads
Happy ending in both
Both have great OSTs

Differences:
WRTW has a lot more comedy and fantasy elements. FH has a lot more political drama
Thought the chemistry in WRTH was better
ML has a non-chalant attitude in FH and in WRTW it is the FL who does whatever and the ML is more poised.

The dynamic between Gun and Cher remind me of Kinn and Porsche. While the plot is wildly different, the main characters’ relationship is very similar. Porsche and Cher as the silly and insubordinate employees and Kinn and Gun as the serious bosses giving in.

Both are related to crime on trains around two decades ago

Operation Moscow is based on real life incidents, I find Operation Moscow’s plot more believable and realistic.

High-school setting + class/group dynamics

My Love Mix-Up! centres on high school students, class seating, crushes and misunderstandings in that school environment.

School Trip places the protagonist as a second-year high schooler who gets separated from his usual friends and must join a group on a school trip.

Both stories use the school-social environment (classmates, group formation, social status) as a backdrop for the romantic development.

“Ordinary / overlooked” protagonist meets someone popular / from a higher social tier

In My Love Mix-Up!, the lead Aoki is fairly ordinary, with a crush on a classmate, and then gets pulled into a situation where another classmate thinks he likes him, creating a new dynamic.

In School Trip, Hioki is “ordinary” / isolated in class, then invited into a group of four popular guys known as the “Four Heavenly Kings.”

This “underdog meets popular upper-tier student(s)” trope is shared between the two — giving the dynamic tension, attraction contrast, and potential for drama.

Romantic comedy / coming-of-age feel with misunderstandings or awkward emotional beginnings

My Love Mix-Up! is explicitly a romantic comedy with misunderstandings (the eraser name mistake) and high-school first love complications.

While School Trip’s synopsis doesn’t yet emphasize a huge comedic misunderstanding, it does highlight nervousness, social awkwardness, “distance” closing between the ordinary boy and the popular boy, jealousy, and first-love discoveries.

So both show the “boy meets boy (in this case BL context)” scenario where one is navigating new feelings, new social dynamics, and emotional growth.

Focus on relational development through proximity / shared experience

In My Love Mix-Up!, much of the plot advances as the characters spend time together, mis-interpretations lead to further contact, and they gradually learn more about themselves and each other.

In School Trip, the school trip setting forces proximity (group travel, shared rooms, outing), which makes the relationship escalate through shared experiences (e.g., group activities, staying in same room) rather than “just passing glances”.

I would like to start by saying Perfect10Liners is a great show thats similar to my school president, Both are school themed, and both have multiple character plots throughout the show but with different things happening in the two series. If you like school type dramas I would recommend watching perfect10liners. It's also really good!

Both are food centered and finding yourself themed queer love stories. Pacing is similar also
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Both dramas involve college students, both involve family issues, both have past trauma/incidents, Both involve uncovering a secret or exposing someone for who they really are. Both have moments that are sad and emotional.

Something in my room:
- one main needs help to sort out his unfinished business as a ghost.
- Comfort and company for the Ghost ML
- Fear of loneliness
- Cohabitation

The love never sets:
- Cohabitation
- Past trauma and healing
- bullying
- Green flag Main lead who offers comfort and support