http://www.mangago.me/read-manga/cello_mellow/tr/131367/page/61/
http://www.mangago.me/read-manga/yorokobi_wa_ude_no_naka/
Actually I might be wrong.. The characters do look a bit similar though
Well still Thanks ... I was searching this manga...and I post this picture 'coz I was searching it.
I think the art is by Nara Chiharu and that it's a novel. I might be wrong.
http://www.mangago.me/read-manga/cello_mellow/tr/131367/page/61/