I tried to think of some different ones from what I've seen suggested.
Let's Fight Ghost / Bring it on Ghost - Dude fights ghosts as a way to exorcise them and teams up with a gal ghost who doesn't know who she was in life. Investigating his past and trying to find her identity.
It's Okay Not to be Okay - One of the best shows of the year. It was a ton of fun and had a great ending. I didn't feel like it dragged at all. She's a crazy (in a scary way, lol) children's book author and he is a health worker in a psychiatric ward and also looks after his older brother. She decides she wants him and sets out to get him. Lots of growth for all the characters.
Flower of Evil - Police detective discovers her perfect, loving husband is not who he seems. But is he a serial killer? Happy ending.
Her Private Life - Professional curator at an art museum by day, obsessed idol fan by night. He is the new museum director, a famous painter who can no longer paint. It was just delightful.
Boss and Me - Office romance. He's the cold boss, she's the struggling newbie. I thought there was a lot of growth for the FL that let her get to the point where she could feel like she was an equal partner with him. And he's just adorable as he finally has someone he can be completely comfortable and relaxed with, because he's just a homebody at heart.
Avenger's Social Club - 3 women from different walks of life team up to get revenge for how they've been wronged, but the friendship that develops is what they really needed in their lives.
Extraordinary You - They are characters in a manga that develop self-awareness and can do as they please 'between the panels' but are forced to act out the author's story as written. The ending completely makes sense for the series.
Kill It - Really the only ending possible. He's an assassin who lives as a vet. He takes jobs for a client in return for information about his past. He meets a detective who was his friend at the orphanage. Separately, they investigate the past and the present. She's suspicious of him, he must hide his actions.
Kleun Cheewit - She's a famous actress with a tragic backstory and present, he's a lawyer and believes she killed his fiancé while driving drunk after a party and wants revenge. I liked that for a change he has to work for her forgiveness. They can't just be together like nothing ever happened.
My Little Princess - Only if you like camp, because this is a charmingly cheesy, fourth-wall-breaking, rom-com! She was adopted by a rich family and forced to become the perfect princess of a daughter by a very demanding mom. She is willing to accept her arranged marriage, however the groom casts her in the role of villainess and refuses the engagement, believing she has been bullying the girl he has a crush on. Despite her determination to wed her fiancé, the princess can't help falling for the mysterious stranger who works wearing the bear costume at the local bookstore. Every time the bear shows up, I just love it. It's a silly confection that gently spoofs a lot of common tropes.
My Roommate is a Detective - A trio works to solve complicated mysteries in 1920s Shanghai. The gangster-turned-police-official convinces a brilliant Sherlock Holmes-esq murder suspect into helping him with the case. After clearing his name, he becomes a consultant for the police force and ends up living with a lady reporter who is the daughter of a prominent gangster. I'd watch another season of this bunch.
Please Love the Useless Me - She's down on her luck when her monster of a former boss (who now owns a cafe) feeds her, gives her a new job, and helps her turn her life around. Co-habitation hijinks ensue.
Ones I think had satisfying endings because my memory of them is very fond, but I don't really recall specifically how they ended: King is Not Easy, King's Avatar, Can We Love?, Hawarang, Go Go Squid, What's Wrong with Secretary Kim?, Terius Behind Me, The Suspicious Housekeeper (Korean), Smile You, Pachara Montra.