Fern

Abilities Mana concealment: Like Frieren, Fern is an expert at concealing her mana, a skill she has maintained ever since she was a child.[19]?As a result, she can often sneak up on individuals, including demons, without being detected. She was able to catch the powerful demon?Lügner?off guard, which surprised him greatly as the adept mana detection of his subordinate?Linie?would normally expose human mages.[20]?She was also able to approach?Wirbel, a mage strong enough to become the Captain of the?Northern Magic Corps, without him sensing her until she was right next to him,[21][22]?and even Frieren herself claims to have trouble locating Fern when she is concealing her mana. She is arguably better than?Frieren?given she can move while completely concealing her mana, whereas Frieren must stay still.[23]?[24] Mana detection: Fern has shown to be more skilled at detecting mana than any other human introduced so far. She was able to determine that?Serie's mana was unstabl