Raul Chaser dedicated rigorous training to the Hero Program, aiming to defeat the Demon King. This goal vanished when others unexpectedly defeated the Demon King, causing the Hero Program's indefinite suspension. Compelled to abandon his dream, he grudgingly accepted a job at Magic Shop Leon, a retailer of magical appliances. Initial dissatisfaction arose from viewing the work as mundane and unfulfilling compared to his heroic aspirations.

Personality-wise, Raul demonstrates diligence and responsibility, notably when training new employees such as Fino Bloodstone. He maintains a serious, often uptight demeanor, serving as the "straight man" in comedic scenarios, especially reacting to Fino's naive or eccentric behavior stemming from her demon heritage. Despite frequent accidental encounters involving nudity or suggestive situations with female coworkers, he consistently avoids taking advantage, reflecting a strong moral code. He remains largely oblivious or dismissive of romantic interest from multiple female colleagues, including Airi Ortinet and Elsa Crucial.

Significant development stems from his relationship with Fino Bloodstone, daughter of the late Demon King. Initially wary due to their opposing backgrounds, Raul gradually forms a protective bond. Training her in customer service and human norms shifts his focus from his failed hero dream to valuing his current role and responsibilities. Her infectious enthusiasm and perspective help him appreciate his job and colleagues at Leon, fostering a sense of belonging and purpose previously absent. This mentorship becomes central to his daily life.

When remnants kidnap Fino to force her into becoming the next Demon King, Raul's latent combat skills and hero training resurface. He actively joins her rescue, confronting former allies turned antagonists like Blaze Dis and Klein Art, who seek to reignite the war to restore purpose to heroes. This culminates in a confrontation where he helps free Fino from possession, reaffirming his commitment to protecting her and his chosen life at Leon over a return to warfare. These events solidify his acceptance of his current life and rejection of his past dream.

Beyond Fino, his interactions include a competitive history and complex dynamic with Airi Ortinet, a fellow former hero trainee in the retail sector, often leading to clashes and misunderstandings. He works under store manager Seara August alongside colleagues like the mechanic Lore Beriferal, the easily overwhelmed Nova Luminous, and the name-sensitive Lamdimia de Accimemor. Relationships within this group aid his integration into the workplace community.

In the OVA special, Raul maintains his ordinary life but participates in an elaborate charade orchestrated by coworkers. They stage a heroic scenario to entertain his visiting younger sister, Miuri, who believes he became a hero. This involves battling a monster Fino accidentally summoned, allowing Raul to briefly utilize his combat abilities comically while preserving his sister's innocent perception, further showcasing his adaptability and care for family.

His retained combat proficiency, a remnant of hero training, surfaces during the rescue mission and OVA monster encounter. He effectively utilizes weapons like rulers and employs tactical thinking, proving his skills remain sharp despite his civilian occupation. The relic gifted by Fino plays a crucial protective role in the climactic battle.