Anime That Starts With O

Are you an anime enthusiast on the lookout for captivating shows that begin with the letter ‘O’? Look no further! We’ve curated a list of fantastic anime series that start with the letter ‘O,’ ranging from action-packed adventures to heartwarming stories that will surely leave you hooked. From popular classics to hidden gems, we’ve got you covered. Whether you’re a seasoned otaku or just dipping your toes into the world of anime, this comprehensive list will surely satisfy your craving for captivating storytelling, unforgettable characters, and mesmerizing animation. So, grab your popcorn and get ready to immerse yourself in the captivating world of anime starting with ‘O’.

List of anime that starts with O

List of Anime Starting with O:

  • One Piece: Follow the adventure of Monkey D. Luffy and his crew as they search for the ultimate treasure, the One Piece, in this long-running and action-packed series.
  • One Punch Man: Join Saitama, a superhero who can defeat any opponent with a single punch, as he seeks to find excitement and purpose in a world filled with powerful monsters and heroes.
  • Ouran High School Host Club: Enter the world of Haruhi Fujioka, a scholarship student at the prestigious Ouran Academy, who accidentally stumbles upon a host club and becomes entangled in their comedic misadventures.
  • Overlord: Dive into the virtual reality game “Yggdrasil” alongside Momonga, an overpowered skeletal mage who finds himself trapped in the game world after its servers shut down.
  • One Outs: Experience the intense world of baseball through the eyes of Toua Tokuchi, a genius pitcher who uses his strategic mind to outwit his opponents in high-stakes gambling matches.
  • Orange: Witness the heartfelt story of Naho Takamiya, who receives letters from her future self, guiding her to prevent the regrets of a new transfer student, Kakeru Naruse.
  • Outlaw Star: Embark on a space adventure with Gene Starwind and his crew as they search for the mysterious Galactic Leyline while facing dangerous bounty hunters and space pirates.
  • Over Drive: Join Shinozaki Mikoto as he discovers his passion for cycling and strives to become a professional cyclist while overcoming various challenges and rivalries.
  • Osomatsu-san: Follow the hilarious and chaotic lives of the sextuplet Matsuno brothers as they navigate through their misadventures, often getting themselves into absurd situations.
  • Ore Monogatari!!: Delve into the heartwarming romance between Takeo Gouda, a tall and muscular high school student with a gentle heart, and his blossoming relationship with the sweet and petite Yamato.
  • Outbreak Company: Explore the comedic tale of Shinichi Kanou, who is transported to a fantasy world with the mission of spreading the otaku culture and subverting the political landscape.
  • Okami-san and Her Seven Companions: Discover the story of Ryoko Okami, a high school student who joins a club that helps those in need, all while navigating her complicated relationship with the charming Ryoshi.
  • Occultic;Nine: Unravel the supernatural mysteries surrounding the “Occultic Nine” website with Yuta Gamon and a group of eccentric individuals who find themselves entangled in a series of bizarre events.
  • Outbreak Company: Follow the adventures of Shinichi Kanou, an otaku who is sent to a fantasy world to spread otaku culture and faces challenges as he interacts with different races and characters.
  • Oniisama e…: Dive into the dramatic world of Nanako Misonoo, a young girl who enters a prestigious all-girls high school and becomes entangled in a web of love, jealousy, and secrets.
  • Ojamajo Doremi: Join the lovable witch apprentice Doremi Harukaze and her friends as they learn about magic, friendship, and the importance of following their dreams in this magical girl series.
  • Otome Youkai Zakuro: Set in an alternate version of Japan’s Meiji era, witness the unique partnership between half-spirit girls known as “zakuro” and human military officers as they work together to bridge the gap between the human and spirit worlds.
  • Onegai Teacher: Explore the romantic relationship between Kei Kusanagi, a high school student, and Mizuho Kazami, his beautiful alien teacher, as they face challenges and prejudices in their unconventional love story.
  • Overlord II: Continue the journey with Momonga, the powerful skeletal mage, as he leads the Great Tomb of Nazarick and conquers new territories in the virtual game world of Yggdrasil.
  • One Room: Experience the unique perspective of three different girls as they interact through their individual stories, providing a glimpse into their lives and forming a connection with the viewer.


As we reach the end of our exploration into the world of anime that starts with “O,” it is evident that this genre holds a captivating array of shows that cater to a variety of interests. From the thrilling adventures of “One Piece” to the introspective journey of “Oregairu,” anime enthusiasts are in for a treat with these exceptional series.

In the realm of action and fantasy, “One Piece” reigns supreme, taking us on a grand odyssey with its beloved cast of characters. The show’s enduring popularity is a testament to its engaging storytelling and the way it effortlessly blends humor, emotion, and epic battles. “Overlord” offers a different flavor of fantasy, immersing viewers in a virtual world where our protagonist, Momonga, embraces his newfound role as an all-powerful overlord. With its strategic gameplay and intricate plot, this series keeps us on the edge of our seats.

For those seeking a more melodramatic experience, “Orange” tugs at our heartstrings with its poignant exploration of friendship, love, and the complexities of life. This beautifully animated show delicately balances its supernatural elements with the struggles faced by its relatable characters. Meanwhile, “Oregairu” delves into the realm of high school romance, examining the complexities of relationships through the eyes of its cynical protagonist, Hachiman. With its thought-provoking dialogue and character development, this series offers a refreshing take on the genre.

In conclusion, the world of anime that starts with “O” leaves us spoiled for choice, catering to a multitude of tastes and preferences. Whether you’re seeking action and adventure, emotional depth, or thought-provoking narratives, these shows have something for everyone. So, grab your popcorn, settle into your favorite spot, and embark on a thrilling journey through the captivating anime that begins with the letter “O.” With their enthralling stories and compelling characters, you’re sure to find yourself completely immersed in these extraordinary worlds. Get ready to be transported to a realm where imagination knows no bounds!

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