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The Blood of Dawnwalker is an open-world dark fantasy action RPG set in 14th century Europe playing as Coen, a human by day and vampire by night. The game was developed by Rebel Wolves, the Polish studio founded by Witcher 3 director Konrad Tomaszkiewicz, and published by Bandai Namco Entertainment.
The vertical sword in a circular seal represents the human/daytime side of the character Coen. It is tied to his sword combat and human hexes during daylight hours.