First 3 years seperation beginning of the drama and another 3 years seperation in the end.
S1 in the end separated for while like another 3 years FL determined to investigate the drug cases. During 3 years ML undercover into drug dealer and FL didn't know this
If S2 happens Then mains lead will end up together
Most people confused about romance concept in this drama
First of all this thriller action drama so basically priority is story development
1.) First ML is married but his wife & children died in crash and he wanted to uncover the incident case and not interested in romance because he loved his family.
2.)other ML is single and his brother died in same crash and partner with first ML to uncover the incident.
In This drama(ROMANCE) shown One of the ML (min joon)and FL(ha ri)flirting with each other to solve cases. And it clearly shown thier interaction,caring each other Which means they are into each other (without showing)
In this drama after all story complete FL didn't see other guy as lifetime partner.
If FL wanted to marry to live a life then only one will here that ML (Min joon) If ML min joon wanted to live a life then only one will here that FL (ha ri)
1 
https://youtube.com/playlist?list=PLhfEGVN-jofSCOUE348MLMVDmFMBHsd1V
https://youtube.com/playlist?list=PLhfEGVN-jofSCOUE348MLMVDmFMBHsd1V
(Main leads likes each other)
In upcoming movie sequel
FL will meet ML and they will get happy ending
(2 strangers meet-up and discuss the About marriage ,if likes each other then get will married)
In the last few minute
ML lawyer made a move in Blind date about talk about marriage
FL first hesitated and lastly made smiles.
If FL wants to get married and ML lawyer is only one
S1 in the end
separated for while like another 3 years
FL determined to investigate the drug cases.
During 3 years ML undercover into drug dealer and FL didn't know this
If S2 happens
Then mains lead will end up together
Min joon & Ha ri into each other
When min joon says "so I wanted to keep them for myself"
Ha ri "smiles"(inner happy)
One Mad dog member say "ohh smooth Mr.Kim"
First of all this thriller action drama so basically priority is story development
1.) First ML is married but his wife & children died in crash and he wanted to uncover the incident case and not interested in romance because he loved his family.
2.)other ML is single and his brother died in same crash and partner with first ML to uncover the incident.
In This drama(ROMANCE) shown
One of the ML (min joon)and FL(ha ri)flirting with each other to solve cases. And it clearly shown thier interaction,caring each other
Which means they are into each other (without showing)
In this drama after all story complete
FL didn't see other guy as lifetime partner.
If FL wanted to marry to live a life then only one will here that ML (Min joon)
If ML min joon wanted to live a life then only one will here that FL (ha ri)
So basically it's happy ending for them
In the end
They should complete the sentence
Let's to let's get married
And
Personal romance starts bw Main leads after the drama ending
Source link??
Most kdrama concept
No chemistry to mutual understanding to romance