Hiromasa Okujima Launches New Manga Serial-san on February 25

The January 2026 issue of Shueisha's Grand Jump Mucha magazine revealed on December 25, 2025, that Hiromasa Okujima will launch a new manga tentatively titled Serial-san in the magazine's next issue on February 25, 2026. The Hiromasa Okujima new manga 2026 announcement marks the creator's latest work following successful adaptations of his previous series, including the Baban Baban Ban Vampire anime and live-action film. The Serial-san manga launch will feature a color opening page and will be prominently displayed on the issue's front cover, indicating strong editorial support for the new series. Okujima launched the Baban Baban Ban Vampire manga in Akita Shoten's Bessatsu Shōnen Champion magazine in October 2021, establishing himself as a creator capable of blending action, comedy, and supernatural elements. Akita Shoten published the manga's 12th volume on November 7, 2025, demonstrating the series' continued popularity and longevity. The Baban Baban Ban Vampire anime adaptation streamed on Netflix on January 12, 2025, bringing the series to international audiences, while a live-action film opened in Japanese theaters on July 4, 2025, further expanding the franchise's reach across different media formats. Viz Media's SuBLime imprint for boys-love manga licensed SHOOWA and Okujima's Bad Boys, Happy Home (Dōsei Yankee Akamatsu Seven) manga, and released the first volume physically and digitally in July 2021. The pair launched the manga in Akita Shoten's Kachi Comi magazine in April 2018, showcasing Okujima's versatility in working with different genres and collaborators. The Bad Boys, Happy Home manga demonstrates Okujima's ability to create engaging character-driven stories across various demographic categories. Okujima's Katei Kyōshi no Kishi Knight Desu. (I Am the Home Tutor Kishi Knight.) manga is inspiring a live-action series adaptation that will premiere on January 5, 2026. The Katei Kyōshi no Kishi Knight Desu live-action series will air Mondays at 11:24 PM JST on networks including BS Asahi, CBC, and Lemino, bringing the story to television audiences. Okujima serialized the manga in Akita Shoten's Nicchan Gecchan magazine in 2019, with Akita Shoten publishing one compiled book volume for the manga. The live-action adaptation is directed by Naho Kamimura, Nao Nomura, and Jirō Nagae, and stars Rei Sawamura and Koki Tanaka, ensuring a faithful adaptation of the source material. The Serial-san manga launch in Grand Jump Mucha represents Okujima's debut in Shueisha's seinen magazine, marking a significant milestone in his career as he expands his work to different publishers and demographics. The Grand Jump Mucha February 2026 issue will feature the new series prominently, with the color opening page and front cover placement indicating strong editorial confidence in the series' potential. This strategic debut positioning suggests that Shueisha expects Serial-san to be a major addition to their magazine lineup. The announcement comes at a time when Okujima's previous works are experiencing significant multimedia success. The Baban Baban Ban Vampire franchise has expanded from manga to anime to live-action film, demonstrating the creator's ability to develop properties that resonate across different media formats. The Hiromasa Okujima Grand Jump Mucha new series announcement builds on this momentum, offering fans a new work to anticipate while his existing series continue to thrive. Okujima's diverse portfolio includes works spanning multiple genres, from supernatural action in Baban Baban Ban Vampire to character-driven stories in his collaborative works. The Serial-san manga launch date of February 25, 2026, provides fans with a specific timeline to look forward to, while the color opening page and front cover feature ensure maximum visibility for the series debut. This editorial support suggests that Grand Jump Mucha sees Serial-san as a potential flagship series for the magazine. As the February 2026 launch approaches, anticipation continues to build among fans of Okujima's previous works and newcomers discovering his creative output through the various adaptations of his manga. The combination of his proven track record, editorial support from Shueisha, and the strategic debut positioning creates an appealing package for readers seeking new seinen manga series. The Serial-san February 2026 release will join other anticipated manga launches in what promises to be an exciting period for Grand Jump Mucha readers.