The Ossan Newbie Adventurer, Trained to Death by the Most Powerful Party, Became Invincible

"Why should it matter how old you are if you want to start something new?"</i> The strongest guy around, who also happens to be middle-aged, strives to be an adventurer! Everyone seems to think you should pursue your dreams while you're still young, but there's one man who just can't give up. In a world where most people who become adventurers do so in their teens, a guild employee in his thirties, Rick Gladiator, seeks to become an adventurer instead. After receiving unimaginably brutal training from the legendary party renowned as the strongest on the continent, Orichalcum Fist, he ends up with combat abilities worthy of S-rank status despite starting out as an F-rank rookie! (Source: Crunchyroll)

The Unwanted Undead Adventurer

Rentt Faina has hunted monsters for the last 10 years. Sadly, he’s not great at his job, stuck hunting slimes and goblins for a few coins each day. His luck turns when he finds an undiscovered path. At the path’s end, he meets his demise in the maw of a legendary dragon. But, he wakes up as an undead bag of bones! He sets out to achieve Existential Evolution and rejoin the land of the living. (Source: Crunchyroll) Note: Each episode streamed 3 days early on some streaming sites. The original TV broadcast started on January 8th, 2024.</i>

The Strongest Tank's Labyrinth Raids -A Tank with a Rare 9999 Resistance Skill Got Kicked from the Hero's Party-

Rud, a shielder with a defense stat of 9999, the highest ever known, serves as a tank for the Hero's Party as they carry out raids in labyrinths. His goal is to find a treasure hidden in one of the labyrinths that can grant any wish, and use it to cure his beloved younger sister's illness... but the tyrannical hero suddenly kicks him out of the party, saying his skill is "useless." So Rud makes his way back to his hometown. Along the way, he saves a young girl, and she reveals the true nature of his skill... which turns out to be incredibly powerful! This is the story of the adventures of Rud, a tank with both the highest defense stat in history and an unparalleled skill! (Source: Crunchyroll)

Suppose a Kid from the Last Dungeon Boonies moved to a starter town?

The story follows Lloyd, a budding adventurer who just wants to get stronger. His plan? Head to the capital and discover his true power, even though he grew up being considered a weakling. So Lloyd heads out from his hometown, which interestingly exists directly next to the most dangerous dungeon. He might not think of himself as strong, but he’ll soon learn that there’s even more of a difference between him and other starting adventurers. You know, because he grew up next to a deadly dungeon. He’s much stronger than he realizes. (Source: Funimation)

Chillin’ in My 30s after Getting Fired from the Demon King’s Army

After losing his job as a Dark Soldier of the Demon King’s Army for his lack of magic ability, 30-ish-year-old Dariel has found himself in a village of humans to spend his early forced retirement. But this unemployed magic-less demon has found a new calling as an adventurer! His second life might just be not so bad after all, as long the villagers don’t find out he’s not human. (Source Crunchyroll)

I Got a Cheat Skill in Another World and Became Unrivaled in The Real World, Too

All his life, Yuuya has been bullied at school and neglected by his parents. After moving into his late grandfather’s home, he discovers a strange door that seems to be calling out to him. Yuuya opens the door, steps inside, and is suddenly transported to a magical world! This new world holds rare treasures and grants him powerful skills, which he takes back to Earth for a new lease on life. (Source: Crunchyroll)

One-Punch Man

Saitama has a rather peculiar hobby, being a superhero, but despite his heroic deeds and superhuman abilities, a shadow looms over his life. He's become much too powerful, to the point that every opponent ends up defeated with a single punch. The lack of challenge has driven him into a state of apathy, as he watches his life pass by having lost all enthusiasm, at least until he's unwillingly thrust in the role of being a mentor to the young and revenge-driven Genos.

Cautious Hero: The Hero Is Overpowered but Overly Cautious

The goddess Rista summons a hero to help her hard mode video game-like world. The hero, Seiya, is exceptional in every way, but he is incredibly cautious to the point of buying three sets of armor (one to wear, a spare, and a spare for the spare) and going full power against weak slimes (just in case). <br /> <br />

Seirei Gensouki: Spirit Chronicles

His past life and current life are intersecting--a boy with memories of two lives faces his destiny! After his mother was killed at an early age, the orphaned Rio fought his hardest to survive in the slums. One day, he awakens to the memories of Haruto Amakawa, who died in an accident while dreaming of being reunited with his childhood friend, and Rio realizing he has reincarnated in a world of swords and sorcery. Not only that, but after helping stop an attempt to kidnap a princess that he stumbled upon, he finds himself enrolled in a famous school where the children of the nobility gather… As Rio attempts to rise up from the bottom of a hierarchical society, he will have new encounters and say many goodbyes, as he fights to overcome fate. (Source: Crunchyroll)

Handa-kun

Hated by everyone around him, Sei Handa goes about his high school life regarded as an outcast—or at least that's what he believes. In reality, Sei is the most popular student on campus, revered by all for his incomparable calligraphy skills, good looks, and cool personality. However, due an endless series of misunderstandings, Handa perceives the worship he receives from his legions of fans as bullying, leading the school's idol to shut himself off from the rest of his classmates. But distancing himself from his peers doesn't deter them from adoring him; in fact, his attempts at drawing attention away from himself often end up unintentionally converting even the most skeptical of students into believers. Fashion models, shut-in delinquents, obsessive fangirls, and more—none can stand against the brilliance that is Sei Handa. [Written by MAL Rewrite]

Failure Frame: I Became the Strongest and Annihilated Everything with Low-Level Spells

Touka always faded into the background at school. And when he’s summoned to another world with his classmates, that still doesn’t change! They all acquire top-rank skills, except Touka, who’s deemed a failure and cast to ancient ruins by the goddess Vicius. Turns out, his low-rank skills may not be so useless after all. Now, he seeks revenge against the goddess, and his true nature is revealed. (Source: Crunchyroll)

The Rising of the Shield Hero

Naofumi Iwatani, an uncharismatic Otaku who spends his days on games and manga, suddenly finds himself summoned to a parallel universe! He discovers he is one of four heroes equipped with legendary weapons and tasked with saving the world from its prophesied destruction. As the Shield Hero, the weakest of the heroes, all is not as it seems. Naofumi is soon alone, penniless, and betrayed. With no one to turn to, and nowhere to run, he is left with only his shield. Now, Naofumi must rise to become the legendary Shield Hero and save the world! Note: - The first episode was pre-aired on December 27th, 2018. Regular broadcast began on January 9th, 2019. - The first episode aired with a runtime of ~47 minutes as opposed to the standard 24 minute long episode.</i>