https://book.dmm.co.jp/product/4142361/dmmmg_3696/

>The protagonist, Mamoru Hoshino, who had been absent from school due to certain circumstances, finally gives in to the earnest persuasion of the demure class representative, Ruka Kakimi, and returns to school for the first time in a long time.
>However, within minutes of his arrival, the school is transformed into a rape hell by monsters that suddenly appear!!
>Can the protagonists survive the relentless rape of the ever-increasing monsters!?

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