The Witch of Ullr's Forest

Rutile is a witch who lives in your forest, and today celebrates her 17th birthday. She had not forgotten the promise she made to her grandmother when she was a child: "Witches should never lie." However, not wanting her friend Linaria to fall into despair, she gives her a different answer from the fortune-telling result, and ends up vomiting blood and dying... And yet, for some reason, she immediately comes back to life...?! The story of the forest's last witch begins! https://www.cmoa.jp/title/313042/