Vagabond

Both shows:
> Are action-oriented.
> Have adorable male leads who can hold their own in a fight.
> Have strong and nurturing female leads.
> Have leads establish a balanced relationship; healthy, nurturing, honest and reliable.
> Main leads show a lot of chemistry.
> Have leads focused on getting justice, more than revenge.
> The Male Lead lost a loved one.
> Are part of a team of misfits.
> Antagonists hold power through corruption.
> They face a number of antagonists, some of which are portrayed a bit cartoony.

This two amazing drama was come from same writernim. So I highly recommend to watch it too, because their similarities

Female detective on both
Intense, action, crime
Involve romance on both
Strong female lead, strong male lead as well

Both have strong male and female leads, romantic maybe? Action, drama, Netflix. Both have the characters go through difficult situations to find out the truth. Both are cool

Both shows:
> Have a ML who's trying to unravel a mystery involving them and their loved ones.
> The leads reluctantly start working together, but then they grow to care and rely on each other.
> The FLs are agents (one is a detective, the other a NIS agent).
> FLs are one of the few who believe in the ML.
> The show is action-oriented with a side of romance.
> Who the "big baddies" are is predictable.
> There are a bunch of mini antagonists along the way.
> Corruption is rampant.
> Have a group of misfits banding together to stop the big bads.

Both drama has a kick ass female detective
Both has romance
Both are intense, explosion, investigation, crime
Both leads are good looking couple

Both shows:
-Involve a character being an NIS agent.
-Have a lot of great action scenes.
-Showcase a female agent working undercover.
-Has a subplot of romance on the side and something of a love triangle.
-ML has a bit of bromance with a support character.

Action filled fast paced and with plenty of emotional and beautiful scenes. The male lead in thunder gets wrongfully accused and becomes entangled with some bad people.

The harmony of action and romance in both of the dramas are great! Although I want to say that while CLOY is on more on the romance side, Vagabond is more on the action. The chemistry between the actors is better in CLOY and the story is focused on their relationship. In Vagabond the romance stays in the background but the action scenes are too good and definietly worth watching. Also the male leads in both of the dramas turns into unstoppable warriors when it comes to protect what they care about. And female leads are strong in their own way too. Both of the drama gives power couple vibes which I personelly loved.

In both shows:
> One of the leads is an undercover agent. In TSWLM it's the ML and in Vagabond it's the FL.
> The leads team up to uncover the truth of a tragedy that affected one of them. In TSWML the tragedy involves the loss of a loved one for the FL, in Vagabond the ML loses a loved one.
> The lead with the hidden identity comes clean to the other lead, allowing them to work together.
> There are plenty of action and fight scenes.
> There is a love triangle involving the ML x FL x 2ML.

Lee Joon Gi at his finest! It's really an amazing action drama, you don't want to miss this and the characters are just so well written.

Both series thrust their protagonists into harsh, high-stakes worlds where their lives are upended by tragedy and they must fight against powerful, corrupt systems rather than settle for passive suffering. In Vagabond, stuntman Cha Dal-gun’s world collapses when his nephew dies in a mysterious plane crash, driving him into a dangerous conspiracy filled with espionage, political cover-ups, and relentless action as he seeks the truth and justice, with gritty chase sequences and brutal confrontations throughout the series. Meanwhile in All In, the lead rises from crime and the gambling underworld, facing betrayal, revenge, and personal redemption through intense competitions and violent conflict. Both shows focus on action-oriented survival, morally complex characters confronting corruption, and gritty, tension-filled storytelling that emphasizes fight-for-truth and fight-for-self arcs rather than easy answers or light drama.

Revenge plot
Less Romance
Ambiguous Ending
Packed with Action
Shooted in various locations
This will keep you in your toes

Both talk about corruption, lobbyst and about militar equipment. Also both try to reveal a hidden truth.

Although the stories are completely unrelated both dramas star Lee Seung Gi and Suzy as leads, if you like the pairing you will want to watch both dramas.