Yuusha ni Narenakatta Ore wa Shibushibu Shuushoku wo Ketsui Shimashita.

Raul spent his entire youth preparing for a single, glorious purpose: to pass the Hero examinations and save the world. However, fate had other plans. Just before his final trials were set to begin, the Demon Lord was unexpectedly defeated by someone else, rendering the position of Hero entirely obsolete. With his lifelong dream shattered in an instant, Raul is forced to abandon his ambitions and face the harsh reality of ordinary life. Reluctantly, he accepts a mundane job at Leon, a magic retail shop located in the bustling royal capital, resigning himself to a quiet existence far removed from the battlefield. His new routine as a simple shop clerk seems destined to remain uneventful until an unexpected visitor disrupts his daily life. A young, eager job-seeker arrives at the store, desperately searching for employment. Yet, beneath this seemingly ordinary encounter lies a staggering complication that threatens to upend everything Raul thought he knew about his new reality. The hopeful applicant standing before him is none other than the child of the very Demon Lord whose defeat ruined his dreams. Now, Raul must navigate the profound irony of working alongside his greatest enemy's offspring in the most unlikely of places.