The Cain Saga Vol 2

From the VIZ Media edition

From the moment Cain's stepsister Mary Weather joins the cast in "The Hanged Man," you'll be lost again in the twisting catacombs of the Hargreaves family history where you'll uncover the secret of Cain's mysterious lineage... But is it really the truth or just another false turn on the way out of Kaori Yuki's dark labyrinth?

Source: Anime News Network Encyclopedia