"Lately, My Little Sister's Been Acting A Bit Strange, But."), also known as ImoCho (妹ちょ。), is a Japanese manga series by Mari Matsuzawa, serialized in Fujimi Shobo's Monthly Dragon Age since November 9, 2010. An anime television series premiered in Japan in January 2014. It was adapted into a light novel written by Kougetsu Mikazuki, which was published on January 18, 2014 under Fujimi Shobo's Fujimi Fantasia Bunko imprint.[3] A live action film adaptation premiered on May 17, 2014.[4]