Rule 34 Dev - 3girls 6+boys absurdres annotated arai_shouji blood classroom desk fukuzawa_reiko full_body gakkou_de_atta_kowai_hanashi greyscale highres hino_sadao hosoda_tomaharu iwashita_akemi kamen_no_shoujo katana kazama_nozomu knife long_hair looking_at_viewer mask mati monochrome multiple_boys multiple_girls sakagami_shuichi school school_uniform serafuku shindo_makoto short_hair short_sleeves sitting smirk sword weapon|5015212488