Don't start with the best ones. Wait to be ready for that.

But choose good ones enough.

Best ones can be bad for you and bads can be your favourites. It all depends on a personality. I started with good rated ones and liked them and wanted to watch more. My recommendation would be:

I'm not a robot - light drama / great comedy / scifi

Goblin - supernatural, fun, deep story

Splash Splash Love - short drama/comedy, historical

Sassy Go Go - school drama, friendship, a bit darker

Bring it on, Ghost - supernatural, fighting ghosts, fun

All have romance and good/happy endings.

 Animelover2004:

Recommendations plzzzz

I normally gets curious every time I see some list like these or recaps:
1. Highest-Rated Korean dramas (cable) of All-time [UPDATED]
2. 11 Pairings We Wouldn’t Mind Seeing Reunite In A K-Drama
3.  Recaps » Dramabeans Korean drama recaps 

You may also check my watchlist here Ahjumemshie Lee's Drama List - MyDramaList 

Enjoy!

Thanks a lot for all these recommendations.

Crash Landing On You - It tells the story of two star crossed lovers, a South Korean heiress and a North Korean elite who also happens to be an army officer. One day, while paragliding, Yoon Se Ri has an accident caused by strong winds, leading her to crash land in North Korea, where she meets Ri Jung Hyuk, a North Korean army officer, who agrees to help her return to South Korea. Over time, they fall in love, despite the divide and dispute between their respective countries.

Descendants of the Sun - Kang Mo Yeon is a pretty and assertive woman who works as a cardiothoracic surgeon at Haesung Hospital. She isn't afraid to admit her mistakes and believes that capability overrides whatever connections you have. However, she is soon faced with the reality that she cannot advance with just capability. Her life is forever changed when she encounters Yoo Shi Jin, the Captain and team leader of Alpha Team who cares more about protecting anybody in need of help as well as his country, even if it goes against the order of his superiors. This drama will tell of how they both bond together in a time of war and overcome the odds against them.

Doctors - Yoo Hye Jung was a tough bully in school with a prickly personality and always goes wayward. She had many scars from her childhood and through self-preservation, Hye Jung keeps her heart shut away from other people. However, she changes after meeting her mentor Hong Ji Hong who plays a key role in transforming her life from a helpless gangster to a compassionate doctor. 

Flower of Evil - Although Baek Hee Sung is hiding a dark secret surrounding his true identity, he has established a happy family life and a successful career. He is a loving husband and doting father to his young daughter. But his perfect façade begins to crumble when his wife, Cha Ji Won, a homicide detective, begins investigating a string of serial murders from 15 years ago. Ji Won notices changes in Hee Sung’s behavior and begins to wonder if he could possibly be hiding something from her. 

I Hear Your Voice - Jang Hye Sung, a bold, sassy, thick-faced, comical, and a materialistic public defender who becomes a lawyer after overcoming poverty and painful memories from her childhood, comes to realization about society and justice after meeting Park Soo Ha, a 19-year-old boy who reads other people’s thoughts and Cha Kwan Woo, an innocent lawyer who lives a disciplined life. Jang Hye Sung is actually Soo Ha's first love after she gave a decisive testimony on his father's murder case 10 years ago and Soo Ha promised to protect her from the killer's threats. Meanwhile, Cha Kwan Woo is Jang Hye Sung's fellow lawyer, a cheerful and an idealistic former cop even though his character is a bit slow, he is nice and pleasant with a firm idea of his principles and justice. Together they will team up to find the justice in the courtroom and solve the toughest cases with less than 1% chance of winning.

Kairos - Living a precarious life as a part-timer at a convenience store, Ae Ri strives to support her mother who is on a waiting list for a heart transplant. Unfortunately, her mother’s worsened physical condition leads her to forgo the long-awaited opportunity for the transplant, and just like that her mother disappears. Things were already chaotic enough for Ae Ri when she receives a phone call from a strange man claiming to be from the same world but 31 days in the future. Ironically, he desperately asks Ae Ri for help. Seo Jin, a father and a husband of a close-knit family, has been living a successful life as the youngest person to become a director at a construction company. One day, it all crumbles down with the kidnapping of his daughter and his wife’s suicide. On the verge of breaking down, he is given an opportunity to restore everything that was lost under one condition, help from a strange woman. To bring his daughter and wife back to life, he makes a phone call as the clock strikes 10:33.

Moon Lovers - When a total eclipse of the sun takes place, Go Ha Jin is transported back in time to the start of the Goryeo Dynasty of Korea during King Taejo's rule. She wakes up in the body of 16-year-old Hae Soo and finds herself in the house of 8th Prince Wang Wook, who is married to her cousin. She soon befriends several of the princes and meets the ostracized 4th Prince, Wang So. Although she knows she should not get involved in palace intrigues over the succession to the throne, she inadvertently becomes a pawn in the struggle, as several of the Princes fall in love with her.

Mr Queen - Jang Bong Hwan is a South Korean chef who has risen up the ranks to cook for the country’s top politicians in the Blue House’s presidential residences. Ever the dreamer, he finds himself in the body of the young queen, Kim So Yong, when whisked away to an era deep in Korea’s past. While Queen Kim So Yong’s husband is the reigning monarch, King Cheol Jong, he is so in name only. The late King Sunjo’s Queen, Sun Won, has taken advantage of King Cheol Jong’s better nature, and is ruling the realm in his name. And she faces competition from her own brother, Kim Jwa Guen, who also has designs on power. Queen Kim So Yong will come to  discover that her husband harbours some secrets, and is not as gentle and meek as he seems…

Mr Sunshine - Mr. Sunshine centers on a young boy born into a house servant's family and travels to the United States during the 1871 Shinmiyangyo (U.S. expedition to Korea). He returns to his homeland later as a U.S. marine officer. He meets and falls in love with an aristocrat’s daughter. At the same time, he discovers a plot by foreign forces to colonize Korea.

Perfume - Seo Yi Do is a top designer. Although he appears to be the perfect man on the outside, his personality leaves something to be desired. On top of that, he has about 52 phobias and 35 allergies. Min Jae Hee is a middle-aged housewife, who has devoted her life to her family only to see it fall apart before her eyes. She discovers a miracle perfume that makes her look young again. After recovering her youth, she ends up walking the runway in one of Seo Yi Do’s fashion shows and signs with a top modeling agency to become a celebrity. Both of them get a second chance at romance in what is described as a fantasy romantic comedy.

Strong Woman Do Bong Soon - Do Bong Soon is a petite, unemployed woman who is honest and kind. She appears little and sweet on the outside, but she is in fact very, very strong. In her family, for generations the women have been gifted Herculean strength to use for the greater good. If abused, however, their power will be taken away. Whilst standing up for herself after gang members bully her, she finds herself approached by Ahn Min Hyuk, the handsome and somewhat childish CEO of Ainsoft, a gaming company. Ahn Min Hyuk, who holds a great distrust towards the police, witnessed the whole exchange of Bong Soon's superhuman strength, and now wants to employ her as a bodyguard after being threatened by an unknown enemy. Min Hyuk falls in love with super-strong Bong Soon at first sight, but there's a catch. Bong Soon has eyes for someone else; police officer and childhood friend, In Guk Doo, whom she has known since high school. When chaos ensues after a series of kidnappings in Do Bong Soon's hometown of Dobong-dong, Dobong-gu, Bong Soon must decide whether to use her strength and stand up to evil, or play it safe and keep her powers hidden from the world. Combined with the love triangle she faces between In Guk Doo and Ahn Min Hyuk, as well as having to keep Min Hyuk safe, Bong Soon's life is thrown into turmoil. Can she use her strength for the greater good, or will it prove in the end to be too much?

The Master's Sun - Joo Joong Won is the stingy and greedy CEO of Kingdom, a conglomerate that includes a major department store and hotel. He meets the gloomy Tae Gong Shil, who started seeing ghosts after an accident. Their lives take a new turn as they work together to deal with the terror and sadness brought about by the spirits, while delving into a kidnapping incident in Joong Won's past. And unknowingly, they fell in love with each other. 

True Beauty - True Beauty is a romantic comedy about a high school girl Lim Ju Gyeong, who rises to pretty girl fame after she masters the art of make-up from YouTube. She turns into a goddess because of her makeup skills, but would rather die than reveal her bare face to anyone. It tells her love story with the only boy that saw her without makeup, Lee Su Ho. Lee is an attractive and handsome boy who appears cold because of his dark past but is actually very caring. They grow when they meet each other sharing their secrets and finding love with each other, but can Su Ho make Ju Gyeong find her true beauty?

 Animelover2004:

Recommendations plzzzz

See, You will be Astonished to know that there's never ending list kf kdramas  that satisfies each of your emotions.  Watching kdramas are like experiencing  a different life because they gets so detailed in each scene. 

Fun, emotional, back to school  stuff - reply 1988

Fantasy and love - Moon lovers ... Well that's for now.