Overlooked or not often recommended romantic comedies or dramas?

Honestly there is a general repertoire of romantic dramas and comedies that are usually recommended, but most of us have already seen most if not all of them or at least gave them enough of a try. 

I’m looking for something I usually wouldn’t find super easily, the country of origin doesn’t really matter (I find watching Korean & Chinese shows easiest though if that helps) but it has to be romantic, engaging and have a satisfying plot. Whether it’s a romantic comedy, sageuk/wuxia/historical or family drama I’m willing to watch as long as it’s fun. I don’t particularly mind if it’s “low budget” either. 

Bonuses for leads that have good chemistry and/or have a lengthy relationship in the show. 

Just Dance

Pasta

Horse Doctor

Eun Joo's Room

Bad Guy

The World That They Live In

My Golden Life

Radiant Office

Live Up to Your Name

20th Century Boy and Girl

Bubblegum

Korean:
Kill It
Be Melodramatic
Good Doctor
The Happy Loner (drama special)
Flower Boy Ramyun Shop
A Beautiful Mind
Flower Boy Next Door
Falling for Innocence
Radio Romance  
Dal Ja's Spring
The Great Seducer
Hwang Jin Yi
Chuno
My Secret Romance

Japanese:
Hotaru no Hikari
Algernon Ni Hanataba O
Hajimete Koi wo Shita Hi ni Yomu Hanashi

Thai:
Neung Nai Suang
Cheewit Puer Kah Huajai Puer Tur
Nee Ruk Nai Krong Fai

Chinese:
Good Bye My Princess
Arsenal Military Academy
Where the Lost Ones Go
Bloody Romance
Siege in Fog

Taiwanese:
Behind Your Smile
Refresh Man

I hope this will be helpful! :) 

I can recommend a few Chinese dramas: Princess Silver, Love of Thousand Years, Love Better than Immortality, Goodbye My Princess. As for Korean, the ones I've watched are not underrated. Hope this helps!

Laughter in Waikiki is hella fun to watch and there's sweet romance too.

• Soratobu Kouhoushitsu
• What is love? (Taiwanese drama)
• It's not that I can not marry but I don't want to
• Cinderella and the 4 knights
• My Sassy girl
• Survival wedding

Since you didn't rule out J or TW, a few more suggestions 

Here's one that REALLY doesn't get mentioned often - Hayako Sensei. A very soft, slow, low-key romance that focuses on the growth of a relationship rather than romance per se. A Sharply Graceful Girl is somewhat similar in that aspect.

Also, one of my FAVOURITE  Taiwanese Dramas that is obviously not on a lot viewers' radars is Love, Timeless - for me, the development over (multiple) times of the SECOND pair is probably even more emotionally satisfying than that of the leads.