Anime XXX - Kotowari Kimi No Kokoro No Koboreta Kakera - 01

A toothed deity ate part of Mishiro's soul when he was a child. Since then, he has had to contend with ghosts known as kotowari, which dwell in the darkness of the souls of individuals who are related to him in some way, no matter how remote. Kotowari are soul pieces formed by a person's sorrow, and they can generally only be seen, heard, and touched by that person. Even if the kotowari is destroyed, it will continue to reappear until the source of the sorrow is resolved. Mishiro sees a kotowari shortly after moving to a school in a historical sightseeing town and seeks to track down its owner. However, there is more than one kotowari, as many other girls are suffering as well.