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Aika has been transferred to the special advancement S class of a famous advance school in Japan. However, there, all of the educational policy was left to the absolute ruler, the nun teacher, and caste-class guidance was given. The top student in the exam is treated as a king, and the bottom student is completely fixed as a punishment & strong in intracerebral drug pickling ● Study is imposed. "Let's give punishment as a classmate to you who can't study" Aika, a busty schoolgirl who is fixed because of her omission and receives punitive training!