Failure Frame: I Became the Strongest and Annihilated Everything With Low-Level Spells
Touka Mimori, who was summoned to another world along with his classmates by the goddess Vysis, is discarded into ruins where high-level monsters roam because he is deemed an E-rank hero, the lowest possible rating. However, the skill he obtained, "Abnormal Status," is an extraordinary (EXTRA) ability that allows him to neutralize any enemy by creating favorable conditions, as it always takes effect without resistance once activated. After killing his first enemy over the course of an hour by paralyzing it with "Paralyze" and inflicting poison with "Poison," Touka experiences a rapid level-up from defeating a superior foe, which also enhances the effects of his skills. He then explores the ruins where dangerous enemies roam, obtains the legacies of those discarded in the past, succeeds in escaping, and meets his partner, the slime Pigimaru. Vowing revenge against the goddess and wandering the world, Touka meets individuals such as the female elf knight
Seras, the female panther-person gladiator Eve, and the dark elf girl Liz, and forms strong bonds with them by saving them from life-threatening situations. He then hides his identity with a mask, calls himself "Fly King Beelzegia," and fights alongside his companions as the mercenary group "Fly King's Battle Group."
—Excerpt from Wikipedia—
This is an excellent work that incorporates all the now-standard tropes of "class transfer," "exile," and "revenge." The protagonist, Touka, is granted the so-called trash skill "Abnormal Status" during the transfer, has the lowest status level, is judged as an E-class hero, and is discarded by a shitty goddess into the deepest level of the ruins used for disposing of heroes. Despite being level 1, he desperately finds a combo of "Paralyze" and "Poison," levels up repeatedly, faces the remains of senior heroes who were abandoned in the ruins in the past and died in despair and terror, realizes the true evil and hidden conspiracy of the shitty goddess Vysis, and succeeds in escaping the ruins after a difficult struggle. He cannot be found by the shitty goddess; he must hide, or it will be dangerous... And so, his escape and counterattack begin. He meets the slime
Pegimaru, saves the beautiful elf knight Seras, rescues the female panther-person gladiator Eve and the dark elf girl Liz from evil conspiracies, and while filled with resignation and despair, he keeps "revenge" and "love for humanity" in his heart, continues to fight, secretly helps his classmates, calls himself the legendary hero "Fly King Beelzegia," continues to defeat superior enemies with his observational skills and insight, establishes the mercenary group "Fly King's Battle Group" with his companions, and lights the beacon of counterattack. It is currently being serialized on "Shousetsuka ni Narou," so if you want to know what happens next, please take a look there. This old man was moved by the protagonist's smoldering anger, conviction, and indomitable fighting spirit.
The opening theme "Hazure" sung by Chogakusei is cool, so I am practicing it hard. But I'm still bad at it, and I'm only getting scores in the 60s on the AI scoring system (´;ω;｀)(´;ω;｀)(´;ω;｀)