Rule 34 Dev - 1girls abs ai_generated aiposter anthro armpits arms_up blue_shorts cutesexyrobutts_(style) deltarune female fur furry furry_breasts furry_ears furry_female furry_only furry_tail gym_clothes gym_shorts gym_uniform looking_at_viewer midriff muscular muscular_female shorts solo stretching toriel undertale undertale_(series)|10742946376