Bleach

Ichigo Kurosaki is a fifteen-year-old high school student with a prying eye and the ability to see ghosts, but his life goes completely haywire the night he meets Rukia Kuchiki, a monster-hunting Shinigami. When a terrifyingly vicious Hollow attacks her family, Rukia is injured and has no choice but to pass her powers on to Ichigo, transforming him into a substitute Shinigami with a giant sword and an irrational amount of spiritual energy. From that moment on, it's all over for our favorite orange: between bloody battles against soul-eating monsters, invading Soul Society to save Rukia from an unjust death sentence, and unraveling age-old plots hatched by the master manipulator Sōsuke Aizen, Ichigo must push his strength beyond all human and spiritual limits, learning to tame the demon that lurks within him before the worlds of the living and the dead are swept away.