>>2657749There you go:
https://m.fanfiction.net/s/6377396/1/SpiralI think it is pretty addictive, hope you like it! Although maybe I should warn you about a few things: the fic contains sex scenes, and the story is not a happy one, rather the opposite, but in my opinion this is what makes the story a lot more interesting and engaging, because we can see the keions in very different situations than those we are used to. But I don't want to spoil you anything, so I'd better cut it off here.
If this is not your cup of tea, well, I can link you to the K-ON! Fanfic recommendation page on TV Tropes:
http://tvtropes.org/pmwiki/pmwiki.php/FanficRecs/KOnThanks to this page I discovered the fic I'm talking about. You should find something that you'll like there. I've readed some K-ON! fics before knowing about this page, but nothing worth recommending.
Right now I'm reading another one written by the same author, called No, Thank You! (you guessed it right, just like the ED). It's okay, but it is not as good as Spiral. Maybe that changes soon, though.
I apologize for my bad english.