Leen is a character from the light novel and anime series "In Another World With My Smartphone". She is a 600-year-old fairy who previously served as the tribal chief of the fairy tribe in the Kingdom of Mismede before becoming the court magician of the Brunhild Dukedom. Leen is also the fifth queen of the Duchy, and as such, her name becomes Leen Brunhild.

Leen is a skilled and knowledgeable magician who has dedicated her life to studying magic and exploring the world around her. She is often seen as serious and reserved, but she also has a kind and caring side to her personality. Despite her age and wisdom, Leen is still capable of being surprised and amazed by the world, and she is always eager to learn more.