Sin Kiske's flag is an unnamed recurring weapon in the Guilty Gear series. Being his signature weapon, Sin wields it after heeding Sol's ironic statement "go wave a flag or something" after demanding him for a cool weapon.
In his debut game, Guilty Gear 2: Overture, Sin's flag is unfurled. In Xrd, he wields it like a staff, having the flag bundled up and kept in place whilst in combat. His redesign in -STRIVE- has his flag loose again with a new pattern.
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