Kanata & Konata

Kanata and Konata are young sisters who can see Yokai—the spirits, gods, and demons that are invisible to most people. The younger Kanata still explores the supernatural world with the wonder of a child, while Konata is getting ready to move on from that world and into high school. When Kanata finds a spirit who asks for help finding five pieces of his body that have been locked away, she agrees. But this task is fraught with danger, and to protect her sister, Konata returns to the world of spirits. Now, Konata must keep her sister safe from both the disembodied spirit who asked for Kanata's help and the demons who want to keep that spirit from his body…

(Source: Mangamo)

Note: Includes eight extra chapters.