Kyo Kara Maoh! Season 2 Episode 7 Witch of the Forest

Yuuri and his friends encounter a strange phenomenon in the forest leading them to a cursed mansion. They meet a witch named Sheila who reveals that the mansion was once her home until she was banished from the forest for being a witch. The group discovers that the mansion houses a magical tree that is responsible for the forest's prosperity and must find a way to restore it. However, Sheila refuses to help and reveals her intentions to use the tree's power to seek revenge on those who banished her. With time running out, Yuuri and his friends must convince Sheila to see reason and work together to save the forest.