Maybe you and Japan's audience finds it endearing and funny, but I'm with Yuki in that her character is so ridiculous her punchline (heh) got old really quickly. I don't have have a problem with tsundere characters punching someone after a “Kyaaaa!” moment because that's usually just one facet of their character. However, Inami's sole characterisation is her deathly fear of men and need to lay hooks and gut shots into them. She's not apologetic about it either. The only recompense she's even made is along the lines of "I know I shouldn't be like this."