Both are about romance between foreign Korean exchange student & an East Asian country girl. Both star Lee Joon Gi.

Both star Miyazaki Aoi. Both begin with a boy taking photo of a girl. Both are about boy inspiring girl to be an artist. In both, one of them flies to another country to meet after parting ways.

Both are about a rock girl band, both are based on famous novels..................................................

Both are tragic romance movies that take place in beautiful scenic snowy mountains of Hokkaido..........................

Both are about a girl time travelling to young years of her mother.....................................

Both are about onmyojis during Edo period.....................................................................................

Both are biographies of two of the greatest martial artists & grandmasters, founders of two of most strongest modern sects of Chinese martial arts ever.

Both are about life of Master YIP man, founder of Wing Chun............................................

Both are tragic romance movies that take place in beautiful scenic snowy mountains of Hokkaido..........................

Both are about an oiran, both take place in Edo period flourished with Ukiyo culture............................................................

Both movies are based on two of four epic great novels of Chinese literature.
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Both are about heists of gentle phantom thieves. Both are based on famous manga ......................