
Two desperate duels rage through Graf Granat's city as Fern presses Lügner and Stark refuses to fall against Linie. The demons hold every advantage in mana and skill, yet a copied technique and a master's stubborn lesson decide who walks away.
Fern's opening barrage forces Lügner to shield his chest on instinct, betraying that his heart is the one place he cannot afford to lose. Forced to take the human mage seriously, he unleashes Blood Manipulation: Balterie, a storm of blood tendrils. Fern parries with defensive magic while hammering him with rapid offensive blasts. Though the demon outclasses her in raw power, control, and craft, the sheer speed of her attacks keeps him pinned and bleeding.
Nearby, Linie believes she has already finished Stark, only for him to drag himself upright and declare the fight unsettled. As they clash, Stark recognizes his own master's movements in her axe work. Linie explains her gift: by memorizing how mana flows through a body in motion, she can copy anyone, and she has stolen the form of Eisen the Warrior, whom she once watched battle Aura's army. Her blows knock Stark down again and again.
Beaten flat, Stark remembers Eisen prodding him during training, insisting that the last warrior left standing is the one who wins. He rises, noting that the genuine article hit far heavier than this imitation. When Linie swings to cleave him, he braces to die for a single counter, discovers her strike is weak, and answers with a downward Lightning Strike that splits her apart. From the wall above, Lügner cries out at her death, and in that lapse Fern flies overhead and drives Zoltraak clean through his heart.
Fern uncovers that Lügner's heart is his vulnerable point. Linie reveals her mana-reading mimicry, copying Eisen's technique to overwhelm Stark. Recalling his master's creed, Stark endures her assault and fells her with Lightning Strike. Lügner's grief over Linie leaves him open, and Fern kills him with a Zoltraak blast to the heart.
Linie shapes a different weapon to match whichever fighter's style she mimics, conjuring a broadsword and a battleaxe in turn. Eisen's training drilled into Stark the principle that victory belongs to whoever stays on their feet longest. The chapter marks the first time Stark's axe move setting up Lightning Strike is given a name. The fighting plays out within Graf Granat's domain.

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Frieren Chapter 20, titled Master's Technique, belongs to the Aura the Guillotine arc; two desperate duels rage through Graf Granat's city as Fern presses Lügner and Stark refuses to fall against Linie, with a copied technique and a master's stubborn lesson deciding who walks away.
In Chapter 20, Linie explains that by memorizing how mana flows through a body in motion she can copy anyone, and she has stolen the form of Eisen the Warrior, whom she once watched battle Aura's army.
Recalling Eisen's creed that the last warrior standing wins, Stark endures Linie's assault, braces for a single counter, finds her strike weak, and answers with a downward Lightning Strike that splits her apart.
After Fern uncovers that Lügner's heart is his one vulnerable point, his grief over Linie's death leaves him open, and Fern flies overhead to drive Zoltraak clean through his heart.
In Chapter 20, Linie shapes a different weapon to match whichever fighter's style she mimics, conjuring a broadsword and a battleaxe in turn.
Looking for more on Chapter 20? The Frieren Wiki on Fandom has a dedicated page with community notes.
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