Genbu
Black Tortoise of the North
Genbu, also known as Xuanwu, is the Black Tortoise of the North and one of the Four Symbols. Its constellation, a tortoise entwined with a snake, is associated with winter. Its stars join the other Symbols as the Astral Empyrean to challenge the Hero. The star Amefuri considers Genbu careful and expects it to be harder to manipulate than its rivals.