Sana

The common link between the two dramas is that they both depict the relationships between neighbors, and their relationship is more than just a normal neighborly relationship, but rather they are like one family, also both dramas depict different relationships that completely simulate reality.

Both of the series have perfectly captured the essence of nostalgia, taking viewers back to a time when life was simpler and more intimate. Both feature concept of family, Friendship and childhood friends/lovers.

University student K is an ordinary young woman, but, one day, she finds herself in her favorite romance novel set during historical times. She has now become the minor character Cha Seon Chaek. She is the daughter of a wealthy noble family and her dream is to have a peaceful and normal life. Cha Seon Chaek, while possessed by K, then spends one night with Lee Beon, the lead male character in the novel.

He comes from a royal lineage and is favored by the King. Lee Beon has a cold-blooded personality and is gifted with an attractive appearance and outstanding martial arts skills. He has also experienced a heartbreaking past. Somehow, Lee Beon and Cha Seon Chaek happen to meet and talk. Lee Beon is consoled by her about his heartbreaking past. They spend the night together. Soon, Cha Seon Chaek tries to connect Lee Beon to Cho Eun Ae, who is the lead female character in the novel. According to the novel, Lee Beon and Jo Eun Ae are supposed to fall in love, but, due to the appearance of Cha Seon Chaek, Cho Eun Ae's fate has changed. No matter how hard Cha Seon Chaek tries, Lee Beon’s love always finds its way back to her.

Other people around them include Jung Su Gyeom and Do Hwa Sun. Jung Su Gyeom is a young officer from a prestigious family. He is Lee Beon’s only friend. Do Hwa Sun is an ambitious woman whose life goal is to marry Lee Beon and become a member of the royal family.

The japanese version "Kaibutsu" is a remake of the Korean version "Beyond evil" , so the story is almost the same with a little difference in characters.

Both are historical /palace setting dramas, with elements of suspense and some horror.
Both have interesting and fresh plot.

Both are female centric.
Both have strong female lead.
Both about military, scheming, politics, power struggle, political intrigue.
Moli might have more romance than QSD.

Both are slice-of-life dramas with a mix of emotional stories and light moments. The cast includes veteran and younger actors, and it explores love, healing, and relationships across generations. And both beautifully show that every stage of life has its own kind of magic.

Both drama set on small towns, both exploring themes of love , life's trails and human connection and highlighting the complexities of life and relationships between family, friends and lovers.

both deal with family issues, especially the bond between parents and kids. both shows explore themes of redemption and growth, with characters dealing with past mistakes and trying to heal emotionally. they also mix humor with serious moments, making it feel real and relatable. the settings are also in small towns.

Both are different stories, but both deal with life hardships, and both deliver many life lessons. Both dramas show the struggles of the leads to achieve their goals.

Seeing OEO recommended under moli will make people afraid that moli will also have a tragic ending, but no it's not the reason of recommendation, but:
•Both dramas are palace setting.
•Both have male lead from the royal family, and both were fighting in wars for their country.
•Both dramas have a strong plot about palace politics (according to the novel for moli).

Someone will be confused why is AMA and moli are recommended while they both are totally different.. Yes they both are totally different stories but the only similar thing is that both fl are soldiers in the special forces(in moli she was a soldier in her pastc"modern era").