A Record of Seeking Knowledge in the Apocalypse

One day, the demons beneath the earth awoke without a sound. Born into an ordinary family, the boy should have lived a peaceful, uneventful life. But for some unknown reason, his mother suddenly went mad and tried to kill him several times. Then, on that day, the demons burst from beneath the earth, and the boy's hometown was instantly turned into a sea of blood. Remembering his father's words, "Survive, and find the source of all this," the boy spends the days ahead following the survival methods he believes in, while tirelessly seeking the "source of all this" his father spoke of and the true reason for his mother's sudden change. Along the way, the boy's resolve moves many companions. They share similar experiences and dreams with him. What's more, a mysterious girl remains by his side as he searches for the truth. The boy is about to face a corrupt monarchy, the demons' destruction, the sacrifices of his companions, the hopes of the common people, and the revival of the army... Will he ultimately succeed in changing the world?