Taida no Majo Speechy

Twenty years ago, the witch Speechy was falsely accused and exiled from the royal capital, driven to live out her days on a remote frontier. Now, a mysterious young knight appears before her, asking for her help. Acting on orders from the king, he begs Speechy to investigate the cause behind the kingdom's looming collapse. "...No thanks," she replies flatly. Left to its own devices, the pitiful kingdom seems bound to destroy itself with or without her. Reluctantly dragged back into its affairs, the lazy witch begins to uncover the grotesque truth festering beneath the surface.

(Source: MU)