Let me think of a possible setting. A fantasy world where signs have magical power. The Signmaster is a figure who maintains signs that hold power. The arms being cut could be part of a ritual to break a connection. The crack link might be the result of this ritual, causing some kind of rift or separation.
Characters: The Signmaster, perhaps a protagonist or antagonist. Maybe a protagonist named Signmaster is trying to break a harmful link by sacrificing their arms. The antagonist could be someone trying to maintain the link. Alternatively, the Signmaster could be a teacher, and a student cuts their arms to break free from a link. signmaster cut arms crack link
Deylan’s sigil-covered arms ensnare Elias. Desperate, Elias slashes his own forearms with the voidsilver blade, screaming the ritual’s words. The bond’s sigils flinch, their light dimming. Deylan retaliates, hacking his own arm to strengthen the link. Elias, bleeding, finishes the ritual: “Flesh for ink, ink for blood. Severance now—” Let me think of a possible setting