Looks like the art of Inariya Fusanosuke.
I'm not sure
It is written that Fusanosuke Inariya is the artist. Sadly I don't know wether it is a manga or only artwork. If you found it, please share it here, i'm also curious ^^
https://www.mangaupdates.com/authors.html?id=1376
Here's all of Inariya Fusanosuke's works
It really looks like something she drew, but I couldn't find any matching ones in the list :(
Does someone know the manga or the artist of this?
http://www.mangago.me/read-manga/tsujimura_san_is_a_secret/mf/v00/c000/3/