Anyone know if this is a manga? http://www.mangago.me/read-manga/nekasenaide/an/nekasena...

Or this?
http://www.mangago.me/read-manga/nekasenaide/an/nekasenaide-chapter-2.5.html/1/

You can check this mangas, I think it has to be from this author, at least the second link you put

http://www.mangago.me/r/l_search/?name=nangoku%20banana

thank you (=・ω・=)

You're welcome :)