Recommendations

Hitoshi is attracted to Rei (step mom). Rei begins to realize that what she wants from Kazunari is not love, but her late father's shadow

Toru, a 20-year old man, falls in love with a woman who is not only married but also 20 years older than he

Secret Affair" tells the story of secret romance between Oh Hye-Won (Kim Hee-Ae), a woman in her 40's, and Lee Sun-Jae (Yoo Ah-In), a man in his 20's.

Well the way the main characters meet each other is kinda similar and
The acting story and specially the songs are wonderful.
So if u liked accirr in love you will definately like Cinderella with 4 knights

Lawless Attorney and City Hunter are both exciting tales of revenge. There is a lot of action in both series.

Both Refresh Man and What's Wrong With Secretary Kim have few similarities, such as leads knowing each other when they were younger, the CEO/ employee relationship, the impossible to please boss, rich man, poor woman trope. The reason I do recommend Refresh Man if you liked What's Wrong with Secretary Kim is they both are written well despite their overuse of certain tropes and cliches.

Both are based on a true story, a strong relationship between two people from different countries. Both will probably make you cry han-river and giggle at some parts.

Human female falls in love with a merman king who has limited time to live as a human. Unusual circumstances lead to cohabitation, a strong bond, and friendship between them.

Human man falls in love with a mermaid, tries to protect her secret and keep her safe.
They both know if humans find out she is a mermaid, they will want to exploit her.

The Twists and plots co-relate. Both Dramas focus on a young boy avenging for previous misdeeds caused to them..

Only difference between the two is in CSL she's much more petty and hateful towards him, and the triangles aren't so obsessive or repulsive as CSL, otherwise pretty same story just in a different setting.

I am simplifying it and ignoring the parent's stories, but both focus on supporting a child through her illness and coming closer as a family to do so. While the parentage isn't that complicated in Wonderful Life and after the diagnosis of the daughter Han Shin Bi, the focus shifts from a love story to focus on family. If you want more of an emotional roller coaster, I would say watch Oh My Geum Bi. Both even have Lee Ji Hoon! Both are worth watching and shedding a few tears.

There main male lead are most a like and famale lead too working hard and flatter I don't know but I find something about irritated so I stopped to great seducer but you mighty like this drama

There is also many things are alike you can watch drama it's pretty good and mystical drama I hope you like

Similar:
1. Wives come back in some other form to take ‘revenge’


Difference:
1. BOAB has a fat female lead losing weight and completely undergoing plastic surgery to come back and take revenge from her husband whereas RMHJD has a soul swap.
2. Husband in BOAB is evil, the husband in RMHJD is the main Male lead.