Rule 34 Dev - 1boy 2d anthro anthro_male anthro_only asriel_dreemurr boxers_(clothing) caprine clothing deltarune eyewear furry furry_male furry_only glasses horn humanoid humanoid_male humanoid_only male male_only mammal mammal_humanoid nipples orange_eyes penis precum solo star undertale undertale_(series) underwear ventkazemaru video_games|3379517008