Calahan is one of the leaders in Aridean's Underground. In the supershort, Calahan, he executes a mission in Qoris in which he blows up the religious group, Sisters in Eden's Name. He serves Yggdrasil in the fight against Eden.
Not much is known about Calahan's dark past, only that he is devoted to serving the Underground and Yggdrasil.
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Behind the scenes
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