Bleach. Volume 1: Tite Kubo

Ichigo Kurosaki has always been able to see ghosts, but this ability doesn`t change his life nearly as much as his close encounter with Rukia Kuchiki, a Soul Reaper and member of the mysterious Soul Society. While fighting a Hollow, an evil spirit that preys on humans who display psychic energy, Rukia attempts to lend Ichigo some of her powers so that he can save his family; but much to her surprise, Ichigo absorbs every last drop of her energy. Now a fully-fledged Soul Reaper himself, Ichigo quickly learns that the world he inhabits is one full of dangerous spirits, and along with Rukia, who is slowly regaining her powers, it`s Ichigo`s job to both protect the innocent from Hollows and to help the spirits themselves find peace.