Ookami-san, for those of you who might not know, OSN is a parody, which means there is a narrator that tells the story and snops in whenever he pleases, which means it's very anoying most of time (no offense inttended fto parody lovers); thankfully, OSN is not gendered as a Parody only, so that is some good news. Basically the story plot is a very common one: girl is tough, not so tough guy likes her, she doesn't (innicially) like him back. So, what's so good about this after all? Besides the art, it's the comedic moments that surround some unique characters. Wacthing OSN won't matter if the plot is a common one, or if it is a parody, because the characters are so well built that you forget everything else, you'll only want to know what'll happen next and how they'll react. There is a promised laugh every episode.
It is a refreashing anime that'll make you laugh at strange situations and characters. Once you see it, it'll become unforgetable.