The Witch of Ullr Forest

Rutile is the witch who lives in Ullr Forest, and she celebrated her 17th birthday today. She's never forgotten her promise to her late grandmother to never tell a lie... But, not wanting to throw her dear friend Linaria into despair, she makes up a different future from what she divined. This immediately leads to her coughing up blood and dying... But for some reason she is soon reborn?! The story of the last witch of Ullr Forest starts here!

(Source: MangaPlaza)