The protagonist, Ichiro Ashiya, a reincarnated individual with enhanced physical abilities and a wide range of magical skills, finds himself in a precarious situation. Having been expelled from the hero Roan Krauss's party, Ichiro is now on his own, venturing into enemy territory. His expulsion stems from an incident where he impregnated three of his party members: the mage Asosie, the saint Milise, and the scout Neish. Roan, while acknowledging Ichiro's combat prowess, deemed this act unacceptable due to the timing of the war and the potential impact on the war effort.
Despite his expulsion, Ichiro is determined to regain his "Hero's Privilege," which grants him access to luxurious accommodations, fine food, and favorable treatment, as well as the ability to freely pursue women. He believes that by earning significant achievements, he can be recognized as a hero again and reclaim these privileges. His immediate goal is to prove himself by confronting the demon forces.
Ichiro begins his solo mission by infiltrating a demon encampment. He uses stealth and illusion magic to poison the Orcs' food, incapacitating them without raising suspicion. His objective is to capture their leader, a High Orc, for information. After successfully subduing the High Orc, Ichiro interrogates him, learning about important demon supply routes and key locations.
The High Orc, initially defiant, breaks down easily when Ichiro inflicts minor pain, revealing his cowardly nature. This encounter leaves Ichiro questioning the quality of the demon forces' leadership.
Ichiro then uses the High Orc as a guide, seeking out a rumored Succubus village. His motivation is purely carnal, driven by his recent sexual exploits with his former party members and a desire for more. However, upon reaching the supposed village, he discovers it is a desolate place populated by withered, elderly Succubi who are unable to sustain themselves due to the ongoing war and lack of male essence. They attempt to drain Ichiro's essence, but he, disgusted, forces the High Orc to be their victim instead. This experience further solidifies Ichiro's frustration and his feeling of having wasted his efforts.
Continuing his journey, Ichiro and the High Orc enter a dragon's territory. Ichiro, learning from the High Orc that the dragon is a female Silver Dragon known for her ferocity, decides to provoke her. Using a powerful amplification spell, he shouts a challenge, drawing the dragon's attention. He then swiftly incapacitates the dragon with a barrage of air magic and binding spells. After a brutal, albeit non-lethal, beating, the dragon, named Shrinel El Ribula, submits to Ichiro.
Shrinel, revealed to be capable of shapeshifting, transforms into a young girl. Ichiro, however, is disappointed by her childlike appearance and her unique biological makeup, which he finds unappealing. He continues to assert his dominance over the dragon, further solidifying his control. The chapters conclude with Ichiro having gained a powerful, albeit reluctant, subordinate in Shrinel, and the High Orc as his guide, while Ichiro remains focused on his quest for achievements and the restoration of his Hero's Privilege.
