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The song gained a new life when it was featured in the 2004 Japanese film "Nana," which was based on the manga of the same name. The song's catchy melody and heartfelt lyrics made it a fan favorite.

A great choice! "Kokoro" by Miyauchi Rie (also known as Rie Miyauchi) is a popular Japanese song that gained international attention. The song was released in 2004 and became a huge hit in Japan, topping various music charts.

"Kokoro" has been covered by several artists, but Rie Miyauchi's original version remains the most iconic. The song's impact on Japanese pop culture is still felt today, and it continues to be a beloved anthem for many fans.