Rule 34 Dev - 1boy bandana bandana_over_mouth bound clenched_teeth evil_grin evil_smile exhausted expression_chart expressions flying_sweatdrops grin hat heavy_breathing male_focus maririnbo osomatsu-kun osomatsu_(series) sanpaku scratching_head sharp_teeth shouting smile teardrop teeth tied_up_(nonsexual) tougou_(osomatsu-kun) tripping|21928016565