Chains of Blue

Lyrium. Templars take it to fuel their powers against mages. It is highly addictive, however, and quitting can leave a Templar riddled with nightmares, severe headaches, visions from the past coupled with great thirst and delirium. Cullen has chosen to cease taking it and now he is sent, unwillingly, on a "vacation" with the Inquisitor to get over the worst withdrawals. NSFW!