if you actually watched the same anime as i did, you would've known he's a wuss trying to be stronger. and up to this point he had only beat up some thugs. fuck, even yuuno could kick his ass.
seeing that they're faced with trained henchmen/woman that was able to beat up yaoyi should've made it clear that shinkuro would have no chance. the fact that shinkuro doesn't want to use the horn made things even harder. as far as we know, shinkuro only allows the horn to pop out when the loli is physically hurt, which didn't happen in ep9.