Rule 34 Dev - 10s 1boy 2girls 4koma backpack bad_id bad_pixiv_id bag blush book comic curly_hair finger_gun greyscale highres hosokawa_kazuko iijima_kana long_hair monochrome multiple_girls original school_uniform serafuku skirt tsurezure_children uchimura_chiaki wakabayashi_toshiya|6931107261