Shakugan no Shana

After being murdered by a demonic force, 15-year-old Yuji Sakai has his life force replaced by a fading flame that dims with each passing day. When the flame dies, his memory will vanish from existence. This is how he crosses paths with Shana, a warrior wielding a burning sword guided by the will of a god. Together they form a bond as Yuji becomes Shana’s accomplice in battles to maintain the balance between the ordinary world and hers.