Aika has transferred into the Special Advanced S Class of a prestigious high school famous nationwide. However, there, all educational policies are entrusted to the absolute ruler, Teacher Tony, and caste-like guidance is enforced. Students at the top of the exams are treated as kings, while those at the bottom are subjected to complete immobilization and intensive study immersed in brain narcotics as punishment... "You, who can't study, shall receive the punishment of being the slave of the class." Aika, a busty female student, is fixed as a dropout due to her poor performance and undergoes punitive training!
