Kakegurui Twin manga volume 12 features story by Homura Kawamoto and art by Kei Saiki.

The Full-Bloom Society is disbanded, and Aoi leaves the academy. It seems like everything is returning to normal…except Mary still feels like something isn’t quite right. Indeed, something “strange” appears in the academy, and visitors from the middle school begin wreaking havoc. How will Mary deal with this new turn of fate?