Sachiiro no One Room (2018)

Both titles involve being kidnapped at a young age and co-habitation which leads to the female lead believing the male lead is a good person.

With the same actor. In both dramas, the focus of the plot takes place in one room.

A girl is just 14 years old, but she endures a difficult life. Her parents abuse her at home and she is bullied by students at her school. She doesn't have a place where she can feel comfortable. One day, the girl is kidnapped by a man wearing a mask. The kidnapper names the girl Sachi, while wishing her to be happy. For the first time, Sachi can feel happiness.

Both about high school girls that are abused at home and bullied at school, founding happiness with a mister (older guy) that helps then run away of their miserable lifes.

Shinichi debuted as a novelist at a young age, but his career has been stagnant for many years. He also has broken up with his girlfriend. His day have now become gloomy. At this time, Yuko and her son moves into Shinichi's home. Yuko is the ex-wife of Shinichi's friend. Shinichi lets them stay at his house. Shinichi writes his novel every night, while Yuko goes out at night to date men. She is conflicted with her feelings to act as a strong parent and to deal with her unspeakable loneliness. Yuko’s son, feeling the loss of his father's presence, begins to admire Shinichi. With their living arrangement, Shinichi and Yuko try keep their distance from each other. But one night..

A girl is just 14 years old, but she endures a difficult life. Her parents abuse her at home and she is bullied by students at her school. She doesn't have a place where she can feel comfortable. One day, the girl is kidnapped by a man wearing a mask. The kidnapper names the girl Sachi, while wishing her to be happy. For the first time, Sachi can feel happiness.
(Source: kisskh)

Both of them is about a girl being bullied in a school and home thus they try to commit suicide.
Then they meet a older guy who and their life change.

If you like Student A then I really recommend Sachiiro no one room and vice versa.

Both take a different, deeper, maybe even slightly twisted look on love and what makes you a family. Both are also adaptations of mangas. The stories are completely different except for the fact that in both doramas the main pair are trying to lay low and hide from the authorities. If you enjoyed the overall story and vibe of the series you will like this...

Very alike base plot. In both dramas one kidnap another to save.
In the little room they focus more on emotional side of both protagonist.
The mother focuses more on running away from searches.

The relationship between the two protagonists is similar. A troubled schoolgirl and an older male living on the outskirts of society.

Both FLs have a traumatic childhood and experienced different types of abuse. The MLs have their own traumas as well. The FL and ML develop a questionable relationship and they have to hide themselves from everyone to live together.

A girl is just 14 years old, but she endures a difficult life. Her parents abuse her at home and she is bullied by students at her school. She doesn't have a place where she can feel comfortable. One day, the girl is kidnapped by a man wearing a mask. The kidnapper names the girl Sachi, while wishing her to be happy. For the first time, Sachi can feel happiness.

A girl is just 14 years old, but she endures a difficult life. Her parents abuse her at home and she is bullied by students at her school. She doesn't have a place where she can feel comfortable. One day, the girl is kidnapped by a man wearing a mask. The kidnapper names the girl Sachi, while wishing her to be happy. For the first time, Sachi can feel happiness.

Kagami Tsutako has been obsessed with Ii Azami for 20 years. While stalking him one day, she encounters Ii Azami being hit by a car. When she discovers he has lost his memory as a result of the accident, she decides to claim they are lovers in order to fulfil her lifelong desire. As a result, as Tsutako repeatedly lies one after another they begin to increasingly escalate…

I haven't finished watching all the episodes yet but its giving me similar vibes to a liar and a broken girl, only difference is that this movie has a somewhat happier delusion.

Both have kidnappings and somewhat abuse/trauma as well as the 2 main leads falling in love with each other.

Both have 2 main characters wanting to find their own version of happiness even if it means lying to themselves just to maintain it.

Both the female leads came from a dark/abused childhood in a way, sachi was abused by her parents while ma-chan was kid napped and traumatized at young age.

Both of the girls' live in a world where they think happiness doesn't exist for them until they meet the one person (male leads) that share or show that they deserve it even if it means lying.

Both the male leads (onii-chan and mii-kun ) are willing to go to such lengths to make the female lead happy. Whether it be lying or hiding from the police.

I just hope the ending to this is somewhat similar to a liar and a broken girl.

I really hope they find their happy end in a way.