I watch a LOT of K-Dramas, but my favourites are ones with multiple story-lines and a really strong, good chemistry romance build up.
So in this I'll include my faves along with a rating. Enjoy (:

Cover - Strong Woman Bong Soon

Good K Dramas - Romance Buildup

KBS02

Seo Jung Hoo (Ji Chang Wook), also known as “Healer,” works as a night courier who executes any task for the right price, leaving no trace. His latest mission? Track down and protect rookie reporter Chae Young Shin (Park Min Young) at the behest of fellow news reporter Kim Moon Ho (Yoo Ji Tae). As Jung Hoo, masquerading as a bumbling reporter, integrates himself into Young Shin’s life, they uncover a deeply buried secret connecting their pasts to a tragic incident over a decade prior. Can Jung Hoo protect Young Shin from the powerful forces determined to keep the truth hidden, all while navigating his own growing feelings for his charge?

Healer

The Time Healers

Na Bong Sun (Park Bo Young), a timid assistant chef with a secret crush, gets entangled in a supernatural scheme when Shin Soon Ae (Kim Seul Gi), a ghost with unfinished romantic business, uses Bong Sun’s body as a vessel to complete her final wish. As Soon Ae's bold attempts to experience love affect Bong Sun’s life, the once shy assistant begins to catch the eye of her star chef crush, Kang Sun Woo (Cho Jung Seok), who’s nursing a broken heart of his own. Both women strive to fulfill their desires – one for a love she never had, and the other for a chance at romance. Will their intertwined fates lead to unexpected romance and closure, or will their desires remain unfulfilled? This 2015 Korean drama series was directed by Yoo Je Won.

Oh My Ghost

The Ghostwriters@viki

Lee Yeong Joon (Park Seo Joon) is the arrogant hotshot vice president of his family’s company, thanks to the tireless efforts of his incredibly talented secretary, Kim Mi So (Park Min Young). With her by his side for the last nine years, Yeong Joon has been able to appear like the shining star he believes he is. But when Mi So suddenly decides to quit, Yeong Joon quickly realizes just how important she is... and not just to his career. Jealous over his older brother, Lee Seong Yeon’s (Lee Tae Hwan) growing relationship with Mi So, Yeong Joon decides it’s time to get his secretary back, no matter what. Based on the novel of the same name by Jung Kyung Yoon, this 2018 South Korean romantic comedy series was directed by Park Joon Hwa.

What’s Wrong With Secretary Kim

The Perfect Secretaries Team

Kim Tan (Lee Min Ho)’s wealthy parents have been grooming him to take over the lucrative family business, the Empire Group, since he was just a young boy. His jealous older half-brother Kim Won (Choi Jin Hyuk) – already a successful executive at the firm – is a constant thorn in Tan’s side. Tan, meanwhile, is engaged to an heiress, Rachel Ryu (Kim Ji Won), the scion of a powerful, hotel-owning family. But while he is studying in the United States, Tan meets and falls for Cha Eun Sang (Park Shin Hye), unaware that she is the daughter of his family’s housekeeper. As super-rich families hatch plans for their children’s future, could love put an end to their ambitious schemes? This 2013 South Korean drama series was directed by Kang Shin Hyo and Boo Sung Chul.

Heirs

The Heirs Team

Park Ji Sang (Ahn Jae Hyun) works as a hepato-pancreato-biliary surgeon in one of Korea’s best cancer research hospitals. He’s also a vampire, born from parents infected with a virus known as VBT-01 that causes vampirism. Despite this, Ji Sang is a firm believer in the sanctity of human life, and suppresses his blood-drinking instincts to save patients’ lives. He reunites with highly competent surgeon Yoo Ri Ta (Ku Hye Sun), the hospital owner’s niece whom he once saved from a dangerous situation, and begins to fall for her, but she doesn’t seem to remember him. However, when diabolical vampire doctor Lee Jae Wook (Ji Jin Hee) takes over as the new chief, Ji Sang will need to keep his wits about him to prevent danger to himself, his patients, and Ri Ta from harm.

Blood

Bloody team

South Korean special forces officer Yoo Si Jin (Song Joong Ki) falls for surgeon Kang Mo Yeon (Song Hye Kyo) but their ideological differences force them to split up. Now, war has broken out in a faraway nation, and Si Jin’s unit is deployed on the battleground. Coincidentally, an unpleasant workplace incident has forced Mo Yeon to join a group of medical volunteers in the same country. The former lovers reunite, but can they find love again – against the backdrop of a bloody war?

Descendants of the Sun

The Sunshine Team

Oh Yeon Joo (Han Hyo Joo) is searching for her missing webtoon-writing father when she is sucked into the strange world of her father’s comic creation. In this dimension, she comes face-to-face with Kang Cheol (Lee Jong Suk), an Olympic gold medal winner and self-made millionaire… and the main character in her father’s unfinished masterpiece “W.” Yeon Joo soon discovers that she can only escape from this bizarre universe by winning the feelings of Cheol. Will she ever return to the “real” world – and find love on the way?

Cassiopeia

Reclusive millionaire Kim Min Kyu (Yoo Seung Ho) has a peculiar condition: any physical skin-to-skin contact with another human triggers a life-threatening allergy. However, when a research group under his company sends him a cutting-edge humanoid robot, his life completely changes – especially because the “robot” is actually a human! After the real robot unexpectedly short-circuits before its scheduled delivery, the head researcher begs his ex-girlfriend Jo Ji Ah (Chae Soo Bin), who the robot was modeled after, to pose as the android instead in exchange for a huge paycheck. Min Kyu, unaware of the truth, develops a strong connection with Ji Ah, but struggles with the idea of falling in love with a robot. Ji Ah herself has also fallen for Min Kyu, but can’t express her feelings due to the elaborate charade. Will love find a way to overcome this huge obstacle?

I Am Not a Robot

The Robotic Team

Despite having the power to see the future, field reporter Nam Hong Joo (Suzy) is often powerless to stop those events from happening. Having recently acquired the ability to foresee future events, prosecutor Jung Jae Chan (Lee Jong Suk) manages to save the life of police officer Han Woo Tak (Jung Hae In), whose death would have been used to frame Hong Joo. By surviving the attempt on his life, Woo Tak also gains the ability to see the future. Realizing their lives are somehow intertwined, Hong Joo, Jae Chan, and Woo Tak agree to work together to solve the mystery surrounding their unusual abilities and find ways to protect those they love most. This 2017 South Korean drama series was directed by Oh Choong Hwan.

While You Were Sleeping

The Dream Team ✨

As a child, Ki Ha Myung’s (Lee Jong Suk) life was torn apart by the media: his firefighter father was accused of killing his team members, and his devastated mother jumped off a cliff, trying to take Ha Myung with her. However, Ha Myung survived, rescued by an old man with memory loss who renamed him after his own deceased son. Now named Choi Dal Po, he grew up with his “niece” Choi In Ha (Park Shin Hye), a girl the same age as him who suffers from "Pinocchio Syndrome," which causes her to hiccup uncontrollably whenever she tells a lie. As adults, they end up hired as reporters for rival news stations, navigating the cutthroat world of broadcast news, and encountering ethical dilemmas and the tragic consequences of biased reporting while also working through their burgeoning feelings for each other and the dark secrets of their pasts.

Pinocchio

The Can't Lie Team

JTBC

Born from a long line of women gifted with monumental strength, Do Bong Soon (Park Bo Young) is far from ordinary. Only able to use her power for good, Bong Soon agrees to work as a bodyguard for Ahn Min Hyeok (Park Hyung Sik), the recently endangered chaebol heir and CEO of gaming company Ainsoft. With dreams of developing a video game of her own, Bong Soon hopes that by working with Min Hyeok, she’ll find a way to turn her dreams into reality. Meanwhile, her childhood friend, Detective Gook Doo (Ji Soo), is on the hunt for a kidnapper whose path soon crosses with Bong Soon. Using her gifts for the greatest good, will Bong Soon find her life full of everything she’s dreamed of and more?

Strong Woman Do Bong Soon

Small but Mighty Team

No Ji Wook (Ji Chang Wook) is a successful public prosecutor whose life changes suddenly after intern Eun Bong Hee (Nam Ji Hyun) joins his team. The duo becomes close, but things get chaotic when Bong Hee is wrongly accused of murdering her ex-boyfriend. Ji Wook pulls out all the stops to help Bong Hee – jeopardizing his stellar career in the process. Ji Wook and Bong Hee realize that the only way out of this mess for both of them is to track down the real killer. But will they close the net in time? And could they find love together as they hunt this cunning criminal?

Shows