The narrative ignites when Ken is forcibly drafted into the thirteenth princess special servant force, instantly clashing with the elite, highly disciplined female warriors who view his sloppy demeanor as a disgrace to their unit. During their first reconnaissance mission into the capital treacherous slums, Ken lazy deductions about criminal hideouts consistently outmaneuver the tactical brilliance of his vice-captain, earning him nothing but scorn from the fiery wind mage Naomi. The tension culminates in a brutal ambush at an abandoned train yard, where dozens of heavily armed thugs surround the understaffed team. While the elite girls unleash devastating elemental barrages to hold the line, Ken performs a masterclass in comedic evasion, tripping over his own shoelaces to accidentally dodge lethal strikes and firing pathetic sparks of mana that somehow trigger catastrophic environmental collapses to bury his enemies. The face-slapping reaches its peak when the arrogant mid-level boss Akij mocks their numbers, only to be swiftly dismantled by the team flawless coordination, leaving him broken and coughing blood on the gravel. Yet the true reversal lies in the aftermath, as the girls realize their so-called useless rookie has consistently positioned himself to survive impossible odds, though they remain entirely blind to the invisible, masked phantom who secretly slaughtered the organization lieutenants the night before. The mission escalates into a deadly race to clear a cursed skyscraper, but the team is suddenly forced to confront a rival royal unit in the palace halls, where a cruel noble servant publicly humiliates Ken for his untidy appearance. Instead of breaking, Ken leans into the insult with absurd, disarming humor, completely ruining his opponent attempt at intimidation and leaving the elite girls bewildered by his unshakeable, almost supernatural calmness. As they prepare for the final assault on the Doom Tower, the team discovers they are severely understaffed, forcing Ken to calculate how to protect his teammates from an army of cursed thugs while maintaining his fragile disguise. The tension snaps when they breach the tower lobby and witness a grotesque machine harvesting human life force, shattering the princess remaining illusions about the empire nobility and igniting a desperate, all-out charge into the heart of the enemy stronghold.

Beneath the chaotic daylight missions, Ken operates a ruthless nocturnal campaign as the Sovereign, a masked entity who dismantles the criminal underworld with terrifying, effortless precision. While his teammates rest after grueling combat, he slips into the shadows of the Doom Tower, systematically neutralizing the organization top lieutenants by exploiting their elemental weaknesses with overwhelming, reality-warping magic. He extinguishes a master fire mage with a crushing tidal wave, vaporizes an earth fortress with silent black lightning, and dismantles a physical enhancement specialist without drawing his blade, leaving only a broken survivor to spread psychological terror through the remaining ranks. When he finally confronts the mutated gang boss Vane, Ken casually erases all ambient light from the penthouse, rendering the villain shadow-severing curse completely useless before delivering a precise, non-lethal strike that cripples the boss without killing him. This calculated mercy ensures the princess will still have a final battle to claim the mission points, preserving the narrative balance Ken desperately needs to maintain his cover. His secret interventions bleed into reality when he accidentally wounds Vane too severely, forcing him to stage a dramatic, public sacrifice during the final confrontation to protect Naomi from a fatal curse spear. The team witnesses his heroic leap, cementing his reputation as a brave but magically inept warrior, while Ken internally groans at the exhausting theatricality required to keep his identity buried. The climax leaves the princess awakening a dormant holy lineage to finish the boss, while Ken fakes unconsciousness to avoid emotional interrogations, successfully securing the victory and the twenty points needed to keep his unit afloat in the brutal succession war.

Following their hard-won victory, the empire immediately forces the thirteenth unit into a high-stakes scavenger hunt to secure the Core of Luminus, a mysterious artifact that could purify the empire toxic mining runoff. With two rival royal teams racing alongside them and the threat of a severe point deduction looming, the girls struggle to gather intelligence until Ken casually suggests the artifact must be hidden in a monster dungeon, citing fictional movie logic that the grandmaster unexpectedly confirms. To avoid tedious research and long meetings, Ken activates a masterpiece of illusion magic, fabricating a fake black-market informant and using a cheap plastic ring as a hypnotic trigger to feed the team exactly the information they need. He breaks the fourth wall to explain his methodology to the audience, revealing how he manipulates sensory perception to control the narrative while his teammates remain blissfully unaware of his puppet mastery. As they march toward the Blood Fault Dungeon, Ken continues his exhausting charade, complaining about the hike and feigning terror to maintain his slacker persona, while secretly ensuring the team formation remains optimal for survival. The mission shifts from a simple retrieval to a test of leadership and tactical adaptation, with Ken quietly orchestrating their path through the shadows.