KILL BLUE, an anime adapted from the manga by Tadatoshi Fujimaki, has emerged as one of 2026's most entertaining sleeper hits. The series follows Juzo Ogami, a legendary assassin who, after a mysterious wasp sting, is transformed into a 13-year-old boy tasked with infiltrating a middle school. This unique premise allows for a blend of action, comedy, and mystery reminiscent of both My Hero Academia and Detective Conan. As Juzo navigates school life, he encounters a colorful cast of characters, including Noren Mitsuoka and Chisato Shiraishi, whose interactions provide humor and balance to the action. The series' accessibility, with no dense lore, makes it easy for newcomers to jump in. KILL BLUE is set to gain further attention during Anime Expo 2026, where Fujimaki will participate in a panel, enhancing its visibility. With streaming available on platforms like Crunchyroll and Netflix, KILL BLUE is positioned to become a flagship title for Weekly Shonen Jump, appealing to fans of popular series like Bleach and Jujutsu Kaisen.