Class of Brains (also known as Gunnou Kyoushitsu) is a sci-fi horror manga by Kenji Ichima that follows Satoki Tsutsuno, a high school student who arrives one day to find his entire class — including his best friend and his crush — reduced to nothing more than disembodied brains. An alien entity calling herself A-sensei reveals that humanity's only hope against a cosmic threat lies in harnessing their collective mental power.

What sets this dystopian, mystery-driven manga apart is its deeply unsettling premise wrapped in a school life setting — a contrast that amplifies the horror and suspense at every turn. With shades of psychological strategy reminiscent of titles like Death Note and Liar Game, Class of Brains delivers 'collective brain warfare' as both a literal plot mechanic and a thought-provoking metaphor, making it a standout entry in modern shounen and sci-fi storytelling.

With 25 chapters available and a relentlessly suspenseful narrative from Ichima Kenji, this is essential reading for fans of horror, aliens, and high-concept mystery manga. Read all chapters in high quality and discover why readers are calling it one of the most shocking new manga series in recent memory.