Gleipnir 3

Shuichi's solved the first part of the mystery behind his body's transformation, but now he and Claire find themselves thrust into a world stranger and deadlier than they could've imagined. A bizarre community of monstrous, super-powered eccentrics has formed around the ongoing quest for the transformation-inducing coins–and whether they like it or not, Claire and Shuichi are going to have to pick a side...

Volume 3 of the Gleipnir manga series by Sun Takeda.