Summary
Qual served as a high-ranking demon within the Demon King's army, possessing such overwhelming power eighty years ago that the Hero's Party was compelled to seal him away. He is the creator of the formidable piercing spell known as Killing Magic/Soul Track, a technique capable of bypassing magical defenses and equipment infused with magical resistance. The spell's destructive capability was so extreme that it could obliterate a target's physical body, having previously been responsible for the slaughter of 40% of the adventurers and 70% of the sorcerers in the region.
