Rule 34 Dev - 1boy 2015 2d anthro anthro_male anthro_only asriel_dreemurr boss_monster caprine fur furry furry_male furry_only goat hair humanoid humanoid_male humanoid_only looking_at_viewer male male_only mammal mammal_humanoid monster penis precum solo thoat undertale undertale_(series) video_games xyi|2136652400