Yume Tsukai

Dream Users) is a Japanese manga series written and illustrated by Riichi Ueshiba.

The series is a spin-off of Ueshiba's earlier manga, Discommunication.

On behalf of their clients they go around searching for nightmares which have escaped the mind of the owner and have manifested themselves into the real world, causing havoc.

The show is characterised by haunting music, strange ghost like nightmares and the transformation of children's toys known as "play offerings" into weaponry and monsters.

Also, they don't just pacify nightmares and expel them from the real world, but instead they take all sorts of cases, where no dreaming is involved, but their power is required.