Fumizuki Academy stands out from the typical Japanese high school crowd with its innovative student sorting system. Akihisa Yoshii finds himself at the bottom of the hierarchy in F class after falling short on the sorting test, surrounded by shabby facilities and mismatched furniture. Despite the odds, Akihisa's friend Yuuji Sakamoto and the brilliant Mizuki Himeji join forces in F class, spurred by a common goal to challenge the higher-ranked classes through the Examinations Summon Battle. With each student able to summon fantasy characters proportional to their academic scores, F class embarks on a daring quest to outshine their peers and claim the school's top spot. Can they defy expectations and ascend the ranks, or is failure inevitable in their uphill battle for recognition?