Hello~

I am looking for a drama or movie that's similar to Sweet 18 or My little bride etc.

I don't really care what country it's from but Korean is preferred. Mainly anything with the theme of arranged marriage between a young female and an older male, or just a romance where the couple has a significant age difference.

Even if they are similar age arranged marriage/ contract marriage is interesting as well. (basically a marriage that was not based on love but later their feelings change)

Thanks in advance~ :D

Delightful girl choonyang
Age difference
Drama: Valid Love
Movie: My Rainy Days

Also for drama: 
Kou Kou Kyoushi 2003
Taisetsu na Koto wa Subete Kimi ga Oshiete Kureta
But I haven't seen them yet, so I'm not so sure ;)
Sweet 18 reminded myself of It Started with a Kiss. It has the same feeling around it, and has a silly main girl pursuing the boy. It's not exactly the same that you are asking but I think you might like it.

As for other recommendations, here are some that involve marriage and/or age difference:

- Nagareboshi - older male, yonger female and marriage contract,
- Full House - contract marriage,
- Wonderful life - forced marriage because of one night stand,
- Drunken to Love you - contact marriage (same director of Fated to Love You TW),
- Kou Kou Kyoushi 2003 - teacher/student relationship,
- Innocent Love - younger girl, older male.

I hope you can find something good to watch. :D
Prime Minister and I