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 protagonist, a powerful and eccentric warrior who doesn't realize he is fundamentally changing the world's destiny
Here is a useful post breaking down why this manga is worth reading, what to expect, and who it is for.
: Written by Naruno Runa and illustrated by Satou Ryousuke ; published by Futabasha . Genre : Action, Adventure, Fantasy, Comedy.
Who it’s for
The series subverts the traditional "reincarnated as a background character" trope by adding visceral battle-fantasy action and dark comedy. Core Premise and Narrative Hook
Everything changes when he turns fourteen and realizes his life is actually the setting of a video game he played in a previous life. However, unlike typical isekai protagonists who are the chosen heroes or main villains, Albert realizes he is a —a nameless NPC with no impact on the plot. Key Plot Beats
Kyou Senshi na Mob, Mujikaku ni Honpen wo Hakai Suru Translation: "As a Mob Villainess, I Unknowingly Destroy the Main Story" Genre: Isekai (Reincarnation), Otome Game, Villainess, Comedy, Romance, Fantasy Status: Ongoing
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 protagonist, a powerful and eccentric warrior who doesn't realize he is fundamentally changing the world's destiny
Here is a useful post breaking down why this manga is worth reading, what to expect, and who it is for.
: Written by Naruno Runa and illustrated by Satou Ryousuke ; published by Futabasha . Genre : Action, Adventure, Fantasy, Comedy.
Who it’s for
The series subverts the traditional "reincarnated as a background character" trope by adding visceral battle-fantasy action and dark comedy. Core Premise and Narrative Hook
Everything changes when he turns fourteen and realizes his life is actually the setting of a video game he played in a previous life. However, unlike typical isekai protagonists who are the chosen heroes or main villains, Albert realizes he is a —a nameless NPC with no impact on the plot. Key Plot Beats
Kyou Senshi na Mob, Mujikaku ni Honpen wo Hakai Suru Translation: "As a Mob Villainess, I Unknowingly Destroy the Main Story" Genre: Isekai (Reincarnation), Otome Game, Villainess, Comedy, Romance, Fantasy Status: Ongoing
