PandoraHearts, Vol. 10 — Jun Mochizuki

A century before, in Sablier, a forbidden portal was flung wide by a
boy, Vincent, in his single-minded desire to protect his brother,
Gilbert. And thus did that foolhardy desire lead to the corruption of
that innocent boy's soul like a sweet poison... Now, as Gil, Oz, and Alice
wander the ruins of the former capital, they are assaulted by illusions
from the past. But how much of it is real? And how much of it illusion?