Rule 34 Dev - 1girl all_fours asahina_natsuki blue_hair collarbone hairband indoors long_hair long_sleeves looking_at_viewer mole mole_under_mouth non-web_source official_art open_mouth photoshop_(medium) red_eyes solo spaghetti_strap super_real_mahjong sweater tanaka_ryou wooden_floor|17739110961