Knowing that Cream's biggest fear is to be left alone, K keeps the fact that he has leukemia, and instead he urges her to marry a kind and healthy man.

It is later revealed that Cream first learned about K's illness when she rummaged through his belongings to find what men liked for her new song, but in fact turned out to be pain medication for terminal cancer patients.

Lead actor Kwon Sang-woo drew inspiration from his own then-recent marriage, saying, "I think being married enables me to think more deeply about playing melodramatic parts... K braves his circumstances for love, and I thought I might have done the same if I were in his shoes".

[2] More Than Blue was released in South Korea on 11 March 2009, and topped the domestic box office on its opening weekend with 256,809 admissions.

Lee Hyo-won of The Korea Times commented that despite its familiar premise, More Than Blue "feels more classic than clichéd and the undying fidelity of the love-struck characters nostalgically evokes old romances.