Yume Tsukai

Yume Tsukai (夢使い) is a Japanese manga series written and illustrated by Riichi Ueshiba which serialized on Kodansha's Afternoon from January 2001 to December 2003. The series is a spin-off of Ueshiba's earlier manga Discommunication. It was made into an anime television series produced by Madhouse that aired on some UHF stations and ABC Television from April 8 to June 25, 2006.

Plot
When people dream, they express their utmost desires and emotions within the confines of their mind; but when their strong emotions cross the border into reality, the dream can turn into an uncontrollable nightmare.

Touko and Rinko are "yume tsukai" sisters, and their job is to deal with these nightmares. Using toys as weapons, the girls must both destroy the nightmare and return the dream to its rightful owner before the nightmare does any sort of serious damage.