Remnant Of The Journal

We are introduced into the world of magic 800 years after the Demon Lord enslave everyone and we met Shin Naoki a student that one day after an attack he found a world journal that contains not only power but a mystery of the past.Along side with his friends they will travel around the world and challenge all the Enemies that uses this journal for evil and figure out what really happened to the heroes that disappeared after the demon lord's defeat and the secrets of Remnant left behind by the heroes using the 7 World Journal.