Since the title provided is a bit of a descriptive sentence rather than the official Japanese title, you are likely looking for the manga known in Japan as (or simply "Kyou Senshi" ).
The story follows a complete background mob character—no special powers, no tragic backstory, no destined love interest. While the “heroes” and “villains” are busy following the predictable rails of a cliché fantasy/shonen plot, the mob quietly goes about his daily life: delivering bread, sweeping temple floors, or farming turnips. Except, every single one of his mundane actions accidentally derails the main storyline. The villain’s monologue? Interrupted because the mob needed to return a lost cat. The hero’s dramatic power-up? Obscured by the mob hanging laundry in the background. The final battle? Postponed because the mob fixed the wrong bridge, redirecting the entire army. "Kyou Senshi na Mob, Mujikaku ni Honpen wo
The title mentions "Mob Villainess." This is interesting because Alcott technically fills the role of an antagonist due to her aura of misfortune, but she acts with the humility of a mob character. She unintentionally crushes the actual "Main Story" of the Otome game, effectively breaking the script the original Heroine was supposed to follow. A literal mob in a game-like world discovers