An adaptation of a South Korean existential romance, this certainly moves and feels like few love stories from this country. You could call it slow, but a kinder word would be contemplative. Keanu Reeves and Sandra Bullock star as tenants of the same lakeside home who communicate, via letters left in the mailbox, even though they are living two years apart. It’s a confusing premise, and Argentinian director Alejandro Agresti (Valentin) is in no rush to clarify things. Yet if you are patient with the plot, you’ll be able to appreciate the way the story is allowed to breathe.