FURVERT!

4_arms anthro arm_growth asriel_dreemurr_(god_form)balls base_one_layout basic_sequence body_size_growth boss_monster_(undertale)bovid bulge caprine clothing erection genitals growth horn humanoid_genitalia humanoid_penis limb_growth linear_sequence male mammal masturbation multi_arm multi_limb muscle_growth one_row_layout pecs penile penile_masturbation penis sequence size_transformation soendapuss solo standing three_frame_image three_frame_sequence torn_clothing transformation transformation_sequence undertale undertale_(series)underwear