I don't like either of the semes, they both raped sensei and sensei forgave both of them (╯°Д °)╯╧╧
While I usually totally despise seme characters like the informant and can feel sympathy for characters like the Young Master but totally despise them for what they do to the uke, I actually like this story because both the informant and Young Master seem to actually realize what terrible things they're doing to the sensei.
I think the dude either gave the cow some drug and that's why she's acting weird and now it's run loose, or he set it free