Sangatsu no Phantasia (三月のパンタシア) is a Japanese pop creator project consisting of vocalist Mia and several composers. Their slogan is "Owari to Hajimari no Monogatari wo Kuusou Suru" (終わりと始まりの物語を空想する; Fantasize the Story of the Beginning of the End). Sangatsu no Phantasia's first video and song, "day break", was posted on YouTube on August 15, 2015. This was followed by twelve other uploads through the end of February 2016.