Rule 34 Dev - 2boys aged_down air_bubble arm_up armpits bishounen braid bubble cloaca collarbone fins half-closed_eyes highres kaiben-san_tarou long_hair looking_at_viewer male_focus merman monochrome monster_boy multiple_boys nipples original sharp_teeth single_braid smile teeth toned toned_male underwater wavy_hair webbed_hands|22637473677