Senyuu.

An ancient tyrant named Satan Rchimedes once ruled through terror, unleashing demons that brought madness and destruction. A thousand years ago, the hero Creation sealed him away, restoring peace. Recently, a massive rift appeared, releasing numerous demons, signaling Satan's return. The king, unsure of who among the descendants of Creation remains, selects 75 individuals and tasks Alba, the new hero, and his warrior Ross with defeating Satan. Alba faces challenges from lesser monsters and suffers a near-death experience at Ross’s hands. As he trains and travels, he encounters unexpected locations and people. The story follows Alba’s journey, marked by battles, humor, and emotional experiences, as he grows alongside his difficult companion.