My Darling Is a Foreigner (2010)

Not THAT big national difference...but again love between people who speak different languages, who have lived in different countries...a beautiful story...I totally recommend it!

On a spring day Munakata Ikujou visited an old temple to view a 1000 years old sakura tree. There Ikujou discovered a 3-year-old girl and adopted her as his own daughter. 16 years later, Sakurako has grown up to become a beautiful woman. Sakurako then has a fateful meeting with Takanashi Hiroto. Their pure love begin.

Although my darling is a gaikokujin is a love story... both of them have foreign relationships

A quirky story of a Japanese woman and an American man as they enter into a relationship and eventually marry. Saori is a manga artist. She meets language geek Tony, who has arrived in Japan after falling in love with the language. As the couple become closer, Saori is inundated with strange questions about the language from Tony. Are these weird questions a trait of his foreign background? Or is it because of his linguist preoccupation? More importantly, can their relationship survive?