Recommendations

If you watched the first one you should watch the second one. It's basically a continuation from the first story.

I'm currently watching this so I can't say much but I'll be back to edit this recommendation.

I'm writing this cause I didn't like that someone didn't recommend something similar to it ?

Both of these dramas focus on firefighters/rescue team. Also the main characters meet after 10 years.

While the male leads are firefighters, the female lead in A Date With The Future is a reporter and the one in My Fireworks On Earth is a doctor.

Bullying
School Violence
High School
Strong Character
Abuse of Power
Friend leads
Multiple leads
Teen School Setting
Fights
Extreme Violence
Action

Tazza 1 and Female Tazza follow a gambling main character.
Female Tazza is more of an investigation, whereas Tazza 1 is more packed with action.

Both titles are centered around gambling.
Both main characters infiltrate a gambling house in order to get revenge.
Tazza uses Hwatu (Korean card game), whereas Female Tazza uses both Hwatu cards and poker cards, so the latter might be easier to follow.

Both movies revolve around the themes of gambling and revenge.
Female Tazza mixes the Korean traditional gambling game and poker games, so it might be easier to understand.

ML with too many secrets and suspicious creating misunderstoods, is he my enemy or my lover, investigation centered, spionage, death tag here and there, revenge& money related, child abandoned with crazy mother, etc

Not much as about pregnancy (a side couple does experience unexpected pregnancy and another unfulfilled wish for children) or even has a contract relationship, but the respective children of the leads end up living together as one family after the leads (re)marry each other. So the theme of loving relatives and kids not of your own blood is quite present here too (later on)

Plus the secondary couple Sangmin/Yeontea in here remind me a LOT on the romantic dynamic of the TRHC leads, indeed.

Sangmin = prior playboy, never in a serious relationship till meeting YT, is super head over heels for her and showering her with puppy-like adoration. YT changes his life for the better, makes him rethink all prior beliefs.

Yeontae = school teacher cares a lot about ppl around her, very diplomatic and nice unless she is pushed too far. Feels the need to deal with problems on her own instead to ask for help, doesn't want to be a bother to others. She is way more reserved with her feelings, needs a lot time to get comfortable with any display of or receiving affection. Very set in her way, stubborn once her mind is made up and need a lot of convincing to reconsider something.

Plus they started off disliking each other too, until SM fell first for her and started to woo a very reluctant YT in a very adamant golden retriever fashion like Taekyung did with Yeondoo. So if you love the (romantic) dynamic of the TRHC leads with ML being head over heels and FL more reluctant, you find more of the same goodness in Five Enough's secondary couple and their story trajectory (minus pregnancy angst of course)

They are both with romance and fantasy elements. The characters also embark on an adventure. It is also set in a fantasy world.

They are both with romance and fantasy elements. The characters also embark on an adventure. It is also set in a fantasy world.

They are both with romance and fantasy elements. The characters also embark on an adventure. It is also set in a fantasy world.

Similarities
-Both dramas are centered around water and the diseases surrounding water. In The Silent Sea some characters become infected with the water that is found on the moon and In Happiness, it isn't the water itself that is the problem but it enhances the thirst for blood once the person is infected.
-Both are military themed dramas. In Happiness, the military is quietly trying to solve the zombie outbreak, and in The Silent Sea the Korean government sends a group of capable soldiers to handle the water crisis in South Korea.
-Both have creepy locations where the characters become trapped in. In Happiness, it is an apartment complex, and in The Silent Sea it is a research base on the moon.
Differences
-The Silent Sea is a sci-fi space thriller where the mystery is mostly what happened to the people inside the research lab, and in Happiness, it is a survival drama where the main characters must somehow survive a zombie outbreak inside an apartment complex.
-The virus is much more fatal in The Silent Sea than Happiness. (surprisingly)
-The Silent Sea has a bitter-sweet ending whereas Happiness has a happy ending.
Both shows will keep you at the end of your seat, highly recommend!!

Both shows portray friendship between three seemingly very different people, together they solve cases and uncover some very big, ugly truths. Tang Fan is very similar to Lu Yao as being the brain of the trio and also a foodie, and also very good at making his best friend paying for stuff. The bromances in both shows are also very sweet ??

Both series have the same vibes with "fraud" cases but its woman version.
The FL is so smart that she can predict the next move.
Both series related with law and Justice. One is lawyer and the other is prosecutor.
Both main lead have "cold" character.
Its just eps 4 now that i made this recommendation. (I'll edit soon)
But, its will be exited kdrama.

FL/Aunt looks after nephew
Nephew is an heir to fortune
ML wants custody approaches FL on "lies"
Fall in love
Short drama