I'm looking for manga or doujinshi

[Monta93]

I'm looking for manga or doujinshi, the story talk about bestiality festival or party or contest or competition or tv show or school or anything in public place and there's many girls and the animals are horse or pig or bull and the most important thing there's no super power or monster or tentacles just normal girls and normal animals.
exactly like Kemo Koi ~Naze Hito wa Kemono to Koi ni Ochiru no ka~ (Whether beast love - why people fall in love with the beast)
and Juukan Kyoushitsu - Bestiality Class