Frieren-sama really doesn't understand people's emotions.
Profile
Overview
One of Frieren's comrades from the next generation, Fern was once a orphan as a result of the war and was adopted and taught magic by Heiten. Although she is only a young person, she always shows herself to be a mature adult, always correcting everyone in the team (this makes her look more like a mother than a disciple of Frieren).