Time Between Dog and Wolf

After his mother is brutally murdered in front of him by the Thai criminal syndicate Cheongbang, Lee Soo Hyun is adopted into NIS agent Kang Jung Ho's family. Together with Kang Min Gi, Jung Ho's son, Soo Hyun becomes a NIS agent. When Soo Hyun met Suh Ji Woo they were about twelve years old and has another fateful encounter with her 13 years later. Together, they had promises for the future. One day, Soo Hyun leaves for an operation dealing with the Cheongbang, only to return in failure because of the resurfacing terrible childhood memories of when he was in Thailand. The chief of NIS agents, Jeong, proposes to the distraught Soo Hyun to infiltrate the Cheongbang. Through Chief Jeong's proposition, Soo Hyun becomes an undercover NIS agent after staging his death. Hiding his past, Soo Hyun infiltrates the Cheongbang with revenge in mind, leaving Ji Woo behind. Under the pseudo-name of Kay, he passes through the backstreets of Bangkok. What Soo Hyun didn't know was Ji Woo is the daughter of the same villain, who killed his mother and father.

=> Lee Joon Gi doing a lot of action stunts in modern drama
=> We see him training in boxing
=> I recommend Time Between Dog and Wolf to Again My Life fans as I personally think this is where he showed his best acting in modern drama (aside from Flower of Evil)

Special agents trying to fight against villains. Action, drama, lost family members...

It's also about a Men going undercover. Then through a accident, he also lose his memories and thinks he is one of the gangsters.

Both main male leads are the self-sacrificing sort that have more lives than a cat, both are in love with a childhood fried who is the source of at least half of their troubles.

The action scenes, the mystery, the actors, the writing, and the character development. All excellent. It's a roller coaster ride of emotions.

They have the same main actor, the handsome and talented Lee Jun Ki, and almost the same feeling.

Both male characters are on opposing forces.One in the Mafia clan and the other in police department.

They both love the same woman.

Both stories are much Mafia related,where the leading males have close bond with their Mafia bosses.

There are two opposite forces.

Both are gangster stories.

The Male lead is a Anti-hero

Both Male-leads are tortured

Both Male-leads find love at the darkest time

Both have a similar plot where the death of someone close to them causes the main characters to seek revenge. As the story progresses, the characters begin to learn more about the past and the events behind their loved one's death, and the only people they can trust are each other.

They both have somewhat similar plot about a cop doing an undercover work in a triad. Both also gave me some sorta same feeling and both are great movies filled with action.

In both, you have the subject of NIS agents going undercover. You also have a love story in both. TBDW is more serious and dramatic than 7th Grade, which is more built like a romantic comedy.

They are similar in the "secret" spy like stuff.. Both are full of action and suspense.