Theresia van Astrea

The previous Sword Saint.

Reinhard's grandmother and Wilhelm's wife. Like Reinhard, she has blue eyes and long red hair.

She possesses extraordinary sword skills, but she fears hurting others and has a gentle nature that dislikes conflict, preferring to admire flowers. Despite her brothers' relentless dedication to their own training, she was unwillingly bestowed with the "Blessing of the Sword Saint," which caused her distress. However, her brothers never treated her coldly and continued to care for her until the end.

She deeply regretted that her brothers, who went to the battlefield in her stead, lost their lives there. Yet, she still couldn't fulfill the role of the Sword Saint until Wilhelm, whom she had feelings for, was in a dire situation. Not wanting to lose him like her brothers, she wielded her sword on the battlefield for the first time as a Sword Saint. From then on, she resolved to embrace her role as a Sword Saint and, with her overwhelming sword skills, brought an end to the Demi-Human War, alternating with the Sword Demon.

She was born with the "Blessing of the Grim Reaper," which inflicts incurable wounds on others. This blessing was a major reason she refrained from wielding a sword, but after confronting it, she learned to control it.

She decided to take up the sword to protect her loved ones, but in turn, Wilhelm's form of atonement and love took away her reason for being a Sword Saint, freeing her from that curse. Later, she married Wilhelm and started a family, but 15 years ago, she went to subdue the White Whale in place of her son Heinkel. During the battle, the "Blessing of the Sword Saint" transferred to Reinhard, which was one of the causes of her death. This incident led to discord within the Astrea family.