Acony

Acony is a manga about the peculiar residents of an ancient apartment building and Utsuki Motomi, the Ordinary High School Student who moves into it with his grandfather. The caretaker is a ghost, the building has a mind of its own and Acony, the first resident Utsuki meets, thinks she is dead. The story follows him as he gets to know the rest of the inhabitants.

This manga provides examples of:
 * Creepy Doll:
 * Genius Loci: The building reacts to intruders by transforming itself into a maze. It can even mess with time. This is highly inconvenient for everyone inside.
 * Haunted Headquarters
 * Monster Mash
 * Mundane Fantastic
 * Older Than They Look: Acony is not a child.
 * Our Ghosts Are Different
 * Parental Abandonment
 * Strange Girl: Acony
 * You Gotta Have Blue Hair: Acony's purple hair, although it's actually not her natural hair color.