Saeko is the beautiful and sexually addicted teacher who tends to hunt boys with her best friend Mayumi.
Saeko is a main character of the manga series Secret Plot that was created by NeWMeN. It originally began publication by Fujimi Publishing's Plaza Comix in 1995. Her name in the original one shot "Junkie Teacher" was Miki Yamaguchi (山口 美), but it was changed to Saeko by the second volume.
Her first appearance was in Secret Plot CH. 1 "Junkie Teacher".