Kyoko Ogura is the eccentrics and caring mother of Ryu Ogura, and she's a witch.
The character of Kyoko Ogura is a main character of the manga series Sei So Tsui Dan Sha that was written by Shiwasu no Okina. It originally began publication in Hit Publishing's Seraphim Comics in 2003.
Her first appearance was in Sei So Tsui Dan Sha Volume 1 CH. 1 "Episode 1".