Testament was human once, before surgery transformed them into a Gear. Under the Conclave's authority, they spent years working toward the revival of Justice. After the Second Holy Order Selection Tournament, something inside them that had been buried found its way back to the surface. Overcome by guilt, they retreated to the Forest of Demons and eventually chose a different purpose: protecting the half-Gear Dizzy from the humans hunting her. The work of protecting someone else restored something in Testament that the transformation had taken away. They now live with the elderly couple who raised Dizzy — a quiet life, and a genuinely happy one.