10 Greatest Shonen Anime Every Fan Needs to Watch At Least Once

Demon Slayer

Demon Slayer centers on Tanjiro Kamado, a teenage boy whose family is slaughtered by demons, leaving his sister Nezuko as the sole survivor, who is turned into a demon herself. Determined to find a cure, avenge his family, and ensure no one else has to suffer the same loss he has, Tanjiro joins the Demon Slayer Corps, where he works to defend society and eradicate demons.

The series is a modern shōnen that became a global phenomenon for its consistently high-quality animation, emotional storytelling, intense, visually spectacular battles, and a memorable cast. The franchise went on to achieve immense success with the release of Infinity Castle, which became one of 2025’s top 10 highest-grossing films of the year. Demon Slayer’s success and influence in anime are undeniable, making it a modern must-see shōnen staple.

Death Note

Death Note follows Light Yagami, a highly intelligent high school student who comes across a supernatural notebook that grants him the power to kill anyone whose name is written within its pages. Using the Death Note, Light begins to reshape the world by killing criminals under the alias of Kira, capturing the attention of world-renowned detective L, and sparking a high-stakes battle of wits.

The series became a defining psychological thriller and cult classic, widely praised for its tense cat-and-mouse dynamic and unforgettable exploration of morality. Its popularity helped to establish anime as an entry point to the medium for global audiences. Death Note stands out for pushing the boundaries of what to expect from shonen anime, making it a must-watch series that viewers will never forget.

Frieren: Beyond Journey's End

Frieren: Beyond Journy’s End begins where most fantasy stories end, with the defeat of the Demon King after a perilous 10-year journey. The series follows the titular character, a long-lived elven mage whose long lifespan makes decades feel like brief moments, forcing her to reassess the meaning of time and connection. Years after their victory, Frieren begins a new journey with Fern and Stark, retracing the legacy of her past adventure while reconciling her true feelings for her late companion, Himmel.

Frieren quickly achieved strong critical acclaim for its unconventional take on the shōnen fantasy genre. Rather than focusing on battles, the series instead opts to center around reflection and the passage of time, making its adventure feel far more restrained in comparison to other fantasy series. By subverting genre expectations, the series achieved something rare and unique, making it an unforgettable and worthwhile experience.

One Piece

One Piece follows Monkey D. Luffy, a young pirate who gains rubber-like abilities after eating a Devil Fruit called the Gum-Gum Fruit. Inspired by the legendary Pirate King Gol D. Roger, Luffy forms the Straw Hat Pirates and sets out across the Grand Line in search of the ultimate treasure known as the One Piece. Along the way, he gathers a diverse crew and takes on corrupt, powerful governments and rival pirates.

One Piece is one of the most commercially successful and longest-running anime franchises in history, maintaining global popularity for decades and inspiring countless fans and creators alike. Its expansive worldbuilding, relatable characters, thrilling adventure and action, and strong exploration of themes such as freedom and found family make it universally appealing and timeless. While its length may intimidate newcomers, it remains a series worth exploring.

Naruto

Naruto centers on the titular character, Naruto Uzumaki, an orphan boy who is ostracized by his village due to the Nine-Tailed Fox sealed within him. Despite this, he ambitiously pursues his dreams of becoming Hokage, the village leader, to earn the respect and recognition of those who once shunned him. When he’s placed in Team 7, he begins to develop new bonds with those around him, pushing him to grow and hone his abilities as a ninja.

The franchise is one of the most influential shōnen titles ever made, and often one of the first series fans think of when it comes to shōnen. Naruto helped define what battle anime could be through its focus on rivalry and perseverance, making it a thrilling and meaningful story from start to finish. As a staple of shōnen and anime itself, Naruto is one series that fans can’t afford to skip over.

Dragon Ball

Dragon Ball centers on Son Goku, a martial artist with extraordinary strength who begins his journey as a curious child searching for the mystical seven Dragon Balls alongside his new companions. The franchise follows his life into adulthood, where he discovers he’s a Saiyan warrior who was sent to Earth, and he dedicates his life to the pursuit of strength while defending the universe from powerful threats.

Dragon Ball is one of the most foundational works in the history of anime, reshaping what shōnen anime looks like and laying the groundwork for modern series to build upon. Its influence spans generations, and it’s a pillar of the anime industry that helped popularize anime. As a thrilling series and global powerhouse, Dragon Ball is a must-watch shōnen anime that inspired countless creators, series, and fans.

Attack on Titan

Attack on Titan takes place in a world where humanity survives behind massive, towering walls designed to protect them from giant, man-eating Titans. Following Eren Yeager, the series begins as a fight for survival, with Eren and his friends joining the Survey Corps in order to eradicate the Titans. However, the story gradually shifts into a far more layered conflict that explores the cycle of violence and hatred, as well as the cost of war.

The series is more than just a modern anime phenomenon; it is widely recognized for its intense storytelling and unpredictability. Its impact comes from its foreshadowing, exploration, and execution of heavy themes, and well-written, morally ambiguous characters that keep fans talking, even years after its finale. Attack on Titan pushed the boundaries of storytelling as a whole and deconstructs traditional tropes and narrative expectations.

Hunter x Hunter

Hunter x Hunter follows Gon Freecss, a young boy who learns that his father, Ging, is a legendary Hunter who explores dangerous, uncharted regions of the world. Determined to find him, Gon sets out to become a licensed Hunter by taking the Hunter Exam. There, he forms a close bond with Killua, Kurapika, and Leorio, each of whom is driven by their own unique goals that shape their journeys.

The story is widely known for its unpredictability and willingness to shift in tone as it changes from a traditional adventure into a darker, more psychologically complex story. Its influence lies in its approach to power systems and in the way it blurs the line between good and evil, making it a layered story that appeals to a broad audience. Its constant subversion of expectations, unforgettable characters, and story arcs make Hunter x Hunter an essential shōnen anime.

Mob Psycho 100

Mob Psycho 100 centers on Shigeo “Mob” Kageyama, a quiet middle school student who possesses overwhelming psychic abilities. Yet despite this immense power, Mob avoids using it in his daily life as much as possible, instead attempting to suppress his emotions to maintain a normal life. He works under Reigen Arataka, a self-proclaimed psychic who mentors Mob through supernatural cases and everyday challenges.

Mob Psycho 100 gained recognition for its unconventional approach to the superhero genre, prioritizing emotional development. Its exploration of adolescence, identity, emotions, and self-acceptance makes it universally resonant and appealing to a wide audience. Shōnen fans who haven’t yet seen the series are missing out on some of the most thrilling battles, cinematic scenes, and emotionally touching storylines in all of shōnen anime.

Fullmetal Alchemist: Brotherhood follows brothers Edward and Alphonse Elric, who suffer devastating consequences after trying to resurrect their mother using alchemy to attempt human transmutation. Edward loses limbs while Alphonse’s soul becomes bound to a suit of armor, leading to them becoming State Alchemists in order to search for the Philosopher’s Stone to restore their bodies.

Fullmetal Alchemist: Brotherhood stands out as one of the best anime ever made due to its consistent pacing, strong themes, complex characters, thrilling battles, and ultimately rewarding storyline. With its intricate character arcs, political intrigue, and exploration of relatable and thought-provoking themes, there’s an aspect to the story that every viewer is sure to love. Viewers who have yet to explore Fullmetal Alchemist: Brotherhood are missing out on one of the greatest shōnen series ever made.