The Sensou-kai has disbanded, and Mibuomi Aiou leaves the school. With her regained daily life, Meari feels a sense of emptiness somewhere. To fill the gap in her heart, an 'alien' appears at the school. Visitors from the middle school start to disrupt Meari's surroundings... The 12th volume of Saotome Meari's "Kakegurui," where fateful connections intertwine.