Frieren: Beyond Journey's End

Frieren, Himmel, Heiter and Eisen celebrate their victory by watching the Era meteor shower, an event which occurs every 50 years. After casually promising to meet them when it happens again, Frieren leaves to study magic. The years go by and the day comes when Frieren must attend the funeral of one of her comrades, confronting her with her own near immortality. When she realizes she barely knew the man she fought beside for ten years, she sets out to learn more about people, and carry out the last wishes of her friend -- to decipher the secret magic of immortality.