Stairway to Heaven (2003)

They are practically the same drama, the only difference is STH is way less quieter.

Because first loves are never forgoten

Both dramas have very similar stories. They both involve childhood, separation, reunion, and rival partners.

They are both about a reconstituted family where the step-brother eventually falls in love with his step-sister then a series of events unfold.

Both stories deal with childhood sweethearts who are separated due to various circumstances then brought back together only to have to deal with all those around them trying to keep them apart and things like illnesses and such. They have a lot of similar scenes, themes, and tone. If you like one you're bound to like the other.

It's the most tragic sad heartbreaking story I never cried for a story like i cried for this one

Both are emotional addictive love triangle stories and both star the talented Kwon Sang Woo (Yoo Seung Ho as his child version). If you enjoyed STH...take a break/cleanse your palate..then watch Sad Love Story/Sad Sonata.

Xiao Lei and Xiao Feng are brothers who depend on each other. They live in an orphanage and have been abused by the headmaster of the place. One day, Xiao Lei sets out to find the Snow Angel who he believes will be able to help make his wish come true. On the way, he meets a girl named Xue Tong. Xue Tong lost her mother and was severely devastated that she stopped talking. The two went hand in hand, although they could not find the Snow Angel in the end, through this encounter they forged a friendship.
Fast forward to their adult years, Xiao Lei with a new name called Ji Teng, meets Xue Tong by accident and they form a bond again. At the same time, Xiao Feng who is now named Xing Feng, also has a crush on Xue Tong. He attempts to prevent Ji Teng and Xue Tong from falling in love.

Both female leads has terminal illness
Very romantic
Roller coaster ride relationship
Very beautiful main couple

Story regarding Herb:

This happened to an employee and a customer at a herb cuisine restaurant. Through each and everyone's interaction and help within "Lover of Herb", it brings out one touching love story after another.

Story regarding Lover:

Yang Ke Fan grew up in a herb farm on top of a hill. After he takes over the restaurant that his father started, he invited his younger sister, Yang Er Shan, who grew up on the hill together with him, to come and work in the kitchen. From then on, the restaurant changed its name to "Lover of Herb". It is also uncovered that Ke Fan and Er Shan are not blood related siblings.

Bartender, Yang Shou Zhi, is a witty, humorous and romantic guy from Hong Kong. He fell in love with the simple and goodhearted Er Shan at first sight and started to pursue her with much enthusiasm. He is a totally different guy then the reserved and sophisticated Ke Fan. Er Shan, who comes from the hillside to the city and has still not gotten used to the busy and crowded environment, gets caught up in this complicated relationship with the two guys.

Both drama the male leads has wealthy background. He is handsome, high rank business owner, but he is in love with the young beautiful girl despite all the rollercoaster ride

Both drama- the main couple were childhood close friends. The FL father remarried. The evil stepmom brought in a daughter… the stepmom bully the FL and the story goes from therer…

Same actress on both. Roller coaster ride. Unfortunately female lead has terminal illness. Male lead stay within. Many obstacle

Rollar coaster ride. Many up and down. Many obstacle in life. Struggle with poverty and challenging. Illness do them apart

It's also tragedy, and i would say what happens in bali is more realistic better than stairway to heaven, but it's still tragedy and has similar themes with rich girl poor girl etc.