Does Annie Age?

No, Annie Leonhart did not age while she was encased within her self-made hardening crystal.

When Annie encased herself in the unique crystal substance, her biological processes, including aging, were effectively put into a state of suspended animation. This stasis was crucial for her survival, especially given the inherent limitations placed upon all individuals who possess the power of a Titan Shifter.

The Curse of Ymir and Titan Lifespan

All inheritors of the Nine Titans are subject to a predetermined lifespan known as the Curse of Ymir. This curse dictates that a Titan Shifter can live for a maximum of 13 years after inheriting their power. Once this period concludes, the individual dies, and their Titan power is then passed on to a new Eldian infant.

• Survival Mechanism: For Annie, being encased in the crystal acted as a protective measure against this curse. If her body had continued to age during the time she spent in her crystallized form, she would have inevitably reached the end of her 13-year lifespan and died, similar to other shifters who succumbed to the curse. Her prolonged containment effectively paused the progression of her life, allowing her to survive beyond the point she otherwise would have.
• Stasis vs. Normal Aging: The crystal provided a form of biological preservation, halting the metabolic activities that lead to aging. This contrasts sharply with the normal aging process experienced by non-Titan Shifters or Titan Shifters who are actively living and using their powers.

Here’s a comparison of aging in different states:

This unique aspect of Titan hardening allowed Annie to remain in a state of suspended animation for several years, preserving her life until she was eventually freed from her crystalline prison.