Failure Frame: I Became the Strongest and Annihilated Everything With Low-Level Spells (Light Novel) Vol. 10

THE TRUE KING As the final battle against Vicius draws near, Mimori Touka makes full use of his “worthless” skills to take revenge on his classmate, Oyamada Shougo. Unbeknownst to him, Vicius has realized his true identity as the hero she once disposed of. When the Goddess persuades Kirihara Takuto to attack Touka, the stage is set for an epic clash between two heroes who couldn’t be more different!
Series Overview: Abruptly catapulted into a fantasy world, Mimori Touka and his classmates have been summoned by the world’s resident Goddess to serve as heroes.
Luckily, most of the students display amazing skills upon arrival—except for Mimori, whose abilities bottom out at a measly E-rank. With no further use for him, the Goddess banishes Mimori to a dungeon from which no one has ever returned alive. Yet, as it turns out, Mimori’s skills aren’t so much worthless as they are abnormal .
Abnormally powerful , even. If Mimori can only claw his way back to the surface, nothing will stand in his way from getting revenge.