Frieren

フリーレン

Frieren was a mage in Hero Himmel's party. They travelled along with Priest Heiter and Warrior Eisen on a ten-year journey to defeat the Demon King. She was the last member recruited to the party, and despite Heiter's initial impression that her mana was average, Himmel had a hunch she was the most powerful mage he had ever met.
As an elf who has lived for over a thousand years, Frieren struggles to form meaningful relationships with humans due to the difference in their lifespans and their perception of time. This generally manifests as laziness, since missing an important event is of no consequence to her, as she will have plenty of opportunities to relive it in the future, or as a nearly sociopathic inability to comprehend human feelings. For instance, she tends not to notice how her lack of impatience or cold statements can affect the humans around her. Her party members have also frequently stated that they cannot comprehend her feelings or read what goes on in her head.
Despite being an extremely powerful mage, Frieren has the habit of collecting rare magic and magic centered on daily usage, such as spells that can polish a bronze statue or make flowers bloom. She always asks for a grimoire as a reward, even if she already knows its contents or, in the case of The Great Mage Flamme's lost grimoires, knows they are fakes.
After the deaths of Hero Himmel and Priest Heiter, Frieren decided she wants to learn more about humans. She is currently traveling with Fern, her pupil, who was a war refugee left in her care by Priest Heiter, on a quest to Ende, the place where souls reside at the northernmost tip of the continent and where the Demon King's Castle was built, in an attempt to speak to Himmel's soul. In her new journey, Frieren visits many places her old party travelled through in the past and relives memories, slowly understanding more about their meaning and her feelings.
Ironically, Fern is generally the one to take care of Frieren in daily activities despite being far younger.

Spoiler

}