I believe it's from this author. ...
http://www.mangago.me/r/l_search/?name=nakamura%20asumiko
looks kinda like the work of NAKAMURA Asumiko, try looking at those manga it might be in there
It's just uploaded here.
http://www.mangago.me/read-manga/middle_school_third_year/
is this a manga ? http://4.bp.blogspot.com/-gtDtpdFoZ-0/U58nevV2w5I/AAAAAAAD8Bg/_N7ivjDiZB0/s1600/PG2+cover_03.jpg