紅一葉 (Akahitoha)

Background
The original song sung by Hatsune Miku was uploaded on February 29, 2008. It was well received with over 300,000 views; however, Luka's version uploaded a year after the original on May 26, 2009, entered "Vocaloid Hall of Fame" with 100,000 views six days after it was uploaded, and reached 1 million views on November 5, 2011.

Miku's version illustrated by various illustrators from Piapro such as Kab, nyan_nyan, and kyky; Luka's version illustrated by Moka Ichiyo, background by Geshi and video by Mieno-hito.

Luka's costume was featured in the online game TinierMe, and also featured in a few albums such as EXIT TUNES PRESENTS Vocalodream. KarenT licenced Akahitoha's singles and is available for purchase in iTunes store.

The song basically tells of a woman who "never miss the water until it's gone". She realized the happiness and love for the man right after he was out to war. In the end, she watched the man out to war and promised to love him for eternity.