Recommendations

Both are light hearted Thai BLs featuring the classic enemies-to-lovers trope with the male leads that have “hated” each other for most of their lives.
In both dramas, the more playful/laid back ML (Pat/J) constantly teases and provokes the more serious and upright ML (Pran/Jinn).

In both the ML get the job to protect the FL. The first as soldiere the other is ex-soldiere.
In both dramas, FL and ML get to know each other better and fall in love. But there are a few obstacles in there way to happiness.

If you like bodyguard dramas watch both.

In both the sister swap their marriage.
In one drama the groom is a general in the other a reckless prince.
In both dramas the new married main Lead couple have to work together to find their best ending.

-sexless married couple who tried to find spark again
-involved cheating
-genre wise is not similar but the main point is similar

- Poster looks similar and if you will notice the official posters of the two, both have a mysterious character being blocked by the NTV Logo (The poster for the right to judge here in mdl is an another version of the official poster)
- Plot is kinda similar with a mysterious killer/killers lurking around
- Both have catchy openings

both have leads that are "running away "
both have similar vibes i.e dark comedy, quirky editing quick progression of plot
they both involve the female lead running away and the male lead helping her
both involve playful banter between the two leads
very similar to each other.

It is the first season while the other is the third season. They both have the same ml and Strange Tales of Tang Dynasty 3: To Changan is the part of Strange Tales of Tang Dynasty

Similiarities:
- Both Thai Dramas
- Both BL Dramas
- Sorn (My Stubborn) and Joke (Hidden Agenda) help the other ml with dating advice
- Both Romance Dramas
- Friends with Benefits dynamic

Diffrences:
- My Stubborn is office based
- Hidden Agends is school based
- My Stubborn starts with Sorn hating the idea of dating anyone younger, like Jun
- Hidden Agenda starts with Joke helping Zo pursue his crush, even though Joke has a secret crush on him
- My Stubborn has a noticeable age gap between the leads
- Hidden Agenda doesn't seem to have a huge age gap compared to the ml's in My Stubborn

Both have somebody that run's an establishment (FoS is a Hotel, OoS is a Bar) in the modern world where they resolve a person's obsession from a past life

Both are a bit episodic going from 1 person to another but with an overarching story
Both have 1 of the leads as a demon hunter at some point
Both of the establishments are catered to monsters/demons

FoS uses time travel while OoS enters the person's dreams with a drink

FoS has a female lead and male lead with a romantic relationship, OoS has 2 male leads with a bromance

Both are japanese dramas about delinquents and include a lot of comedy. In Densetsu No Head Sho, an ordinary guy pretends to be a delinquent. In Nanba MG5, a delinquent pretends to be an ordinary guy.

Behind the scenes scenarios playing out in both series, mirroring the life celebrities (actors and singers) must go through.

-Enemies to lovers (difference is one of them is bl and the other one is not)

-Both about gaming

I think they look a like

Similarly, there's a love story between an owner and a dog who turns into a human. The owner and the dog first have a close relationship as pet and owner, but when the dog becomes a human, their relationship evolves.

This is a republican drama. Also , there is Chen Duling too. They have similar backgrounds era. Also , there is one thing that the characters of both drama recount Japanese because the setting is where Japan invaded China. There is also ccp too.

Both have similar kind of male lead ..both male leads are playful.. and the female leads are kind of introverted or silent type