Slasher Maidens, Vol. 1

Around the world, a phenomenon is observed where those whose mental stressreaches a peak transform into monsters called "Kaijin" and succumb to murderousimpulses. Such supernatural events were completely unrelated to proud pervertAsuma Sudo, but after he transfers to an all-girls school while chasing the girlof his dreams, he discovers that the school was actually a front for ananti-Kaijin special agency!