Recommendations

Both of them are about high school students who travel back in time! The male lead in this drama is mistaken as a vassal while the female lead in Splash Splash LOVE is mistaken as an eunuch. Both dramas are light and sweet!

Protagonist trains to become stronger and take revenge on those who ronged him in the past. He is naturally gifted but still needs to increase his spiritual power. In both stories they save the girl who then supports them on their journey. Protagonist has to keep his real identity a secret. While training, he makes friends who support him on his quest. Also, same actor playing the protagonist.

*The two main characters are from different worlds meet and has a romantic relationship
*The male lead has special ability to travel from one world to another

In both stories the protagonist trains to increase his spiritual power in order to take revenge on people who wrongeded him in the past. Having to hide their teal identity, they have to overcome many difficulties including some kind of sickness or curse in order to achive their goal. Supported by the female lead they make friends who will support them on their quest.

It follows the same plot of an undercover 'agent' who has to hide his identity in order to complete his missions.
Falls in love with the LI while on a mission resulting in her becoming his 'weakness' and someone he has to save.
Like healer, the LI starts off with a 'crush' on the second lead but eventually falls for the main guy.
You have your nice share of corrupt politicians and people in higher power.
The comedy feel in Healer is enhanced more in man to man but there is still a good amount of action/tense scenes.
I would really recommend watching this is if you loved Healer, both lead actors are great.

Both are about survival game with one mastermind.
3Nen has a really great theme it focuses on, it is about bullying. It is a really good japanese-style-dark comedy and full of life lesson.
365 is a really suspenseful, similar to manga Btoom.

In love is their room for second chances? Both deal with this theme when one partner cheats on the other. Will each of them give them a second chance?

Must watch 1 then 2. Monkey is a different actor but still a good show, the rest of the characters are the same. Classic journey to fight monsters & saving their master from them.

They both have a parallel universe in which the main male character can travel to and from under special circumstance.
Both female leads are police officers.

The female lead have the same background.. travel to ancient time to find her true love.. and have to struggle before they finally recognize each other.

These are both shows that tackle the subject of nostalgia and remembrance of relationships. For "When My Love Blooms", it's more about remembering the good times of their relationship first time around in their youth, and how they can rekindle it in their later lives. While in "Go Back Couple", it's more about going back in time to their youth, and just re-experiencing their past together. In the end, these dramas cause the main couple to learn more about each other in a deeper way, and it puts them at a more mature and deeper understanding.

The brotherhood is real! Although one is modern time and the other one is ancient times, the plots of each case or "crime" committed is super interesting. Plus, the romance in both is super cute.

I would not say that this exactly is a match, but the idea of nostalgia and remembering the past is a huge element in both of these. Also, its about the remembrance and nostalgia of a relationship, which these two shows both tackle.

Mentally challenge, kind heart, innocent, pure, Love, human kind heart, supportive, Love, challenging, corruption, pain, endurance, persistence,

This is a story of two close families that promised and agreed of their children's marriage before they were born. Madam Lamphao, the head of Wichanee family, has two daughters: An elder daughter called Rojanasnai and her youngest Romereuthai. The elder sister already has a lover named Prawut Wuttisak. While Madam Preme, the head of Pathamakul family, has only one son called Paat Pathamakul. When the time came and the youngest daughter Romereuthai learned that she had to marry a son of her mother's friend, she was dissatisfied and opposed it because in her opinion Paat is a rustic, old-fashionable fool. So she forced her sister to marry him instead but Rojanasnai also defied it since she had her lover. In order to get her sister consent to get married Romeruethai used her last choice by revealing the truth that Rojanasnai was not her biological sister but an orphan that her mum adopted at the very young age. Overwhelmed with consciousness of gratitude Rojanasnai finally accepted the marriage to pay back the debt of gratitude.When Pathamakul heard the news of marriage acceptance Paat came to see his fiancé for the very first time and when he arrived and found out that his fiancé is not Madam Lamphao's daughter he was angry thinking that they tried to fool him and that she was after his money. When Romereuthai met Paat she was stunned, she never thought that a rural guy could be that amazingly handsome. So she tried each and every way to seduce him but he didn't fall for it or worse he was not interested in her at all. Paat decided to bring Rojanasnai back to his home and under the mutual misunderstanding and conflict he always threatened and reminded her that they were only technically married. And if she leaves him during the first three months this will mean war between these two families... Will this loveless marriage which was born of a promise and hate turn to love at last?