"I Am Shadow") is a Japanese manga series written and illustrated by Noriko Kasuya.

It was serialized in Shueisha's josei manga magazine You from June 2007 to November 2010, with its chapters collected in six tankōbon volumes.

A nine-episode television drama adaptation was broadcast on TBS from October to December 2011.

Written and illustrated by Noriko Kasuya [ja], Watashi wa Shadow was serialized in Shueisha's josei manga magazine You from 30 June 2007[1] to 15 November 2010.

[8][9][10] Perfume performed the series' theme song "Spice (スパイス, Supaisu).