Little sorceress Ran Uruma struggles as she desperately searches for her favorite shoes. These particular shoes allow her to transform into an adult and hold immense magical potential. Despite being just an elementary school child, Ran is teeming with magic but has yet to learn how to control it. Her brother Jin, a beast sorcerer, hides the shoes until she completes cleaning their house.
Ran's mother Shizuka is one of the most powerful sorceresses in existence and must live far from home to protect the city. Zen, head of the family and all sorcerers, often leaves Jin in charge while attending business. With no restrictions, Ran explores her magical abilities and embarks on exciting adventures.
Ran to Haiiro no Sekai has been licensed in English as Ran and the Gray World by VIZ Media. It was published in Swedish as Rans magiska värld by Ordbilder from September 20, 2011 to November 7, 2016. It has been published in Spanish by Ediciones Tomodomo as Ran y el mundo gris since March 20, 2017.