Lit (stylized as LIT) is the first single by Japanese artist Kumi Koda released after her thirteenth joint-studio album W Face ~inside~ and W Face ~outside~. The single is the first of three planned releases Kumi has for the year of 2017. As with her previous single, Shhh!, LIT was only released via mu-mo. Due to it having no physical release, the single did not chart on Oricon; however, it was given a five star rating on the popular Japanese rating site RecoChoku.

LIT is the first single by Japanese singer-songwriter Kumi Koda released after her thirteenth studio album W Face ~inside~ and W Face ~outside~, and her sixtieth overall single. It was her first single release in over a year, her previous being Shhh! in April of 2016. As with Shhh!, the single was given a limited release through the popular music site mu-mo and was available at concert venues for her Live Tour 2017 ~W Face~.

Due to having no wide release and only being available digitally, at concert venues or via mu-mo, LIT failed to chart on the Oricon Singles Charts; however, the song did garner a five star ranking on the popular Japanese digital music site RecoChoku. The limited physical single harbored both the title track and its corresponding instrumental. On the DVD portion, instead of the music video being released, the making video was put in its place. On August 3, the day after the single's release, avex's official YouTube uploaded the full music video.

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