"Nemurenu Yo ni" (眠れぬ夜に, lit.

"On a Sleepless Night") is a song by Japanese singer-songwriter Rina Aiuchi.

It was released on 19 December 2007 through Giza Studio, as a double A-side with "Party Time Party Up" and the third single from her sixth studio album Trip.

Following the release, the single peaked at number eight in Japan and has sold over 18,413 copies nationwide.

[1] The song served as the theme songs to the Japanese television show, Kami Summers.