Uma Musume: Haru Urara Ganbaru!

Uma Musume Pretty Derby: Haru Urara Ganbaru! (ウマ娘 プリティーダービー-ハルウララがんばる!-) is a spin-off manga by ZECO and was uploaded on Cygames' online manga site "CyComi". It was serialized for 10 chapters from May 8 to September 11, 2016, featuring Haru Urara as the main heroine.