Hello, have you ever read an manga an saw this image in the credit page?
If so, what manga were you reading? In the image there was an arrow pointing at
the guy with brown hair and says something like this " his head should be pressed more down" or something similar.
http://pm1.narvii.com/6355/618a0b5bae176d0a92dcc7d1ec3223757f457049_hq.jpg

So, to be clear: you're not asking what manga the two guys in this image are from (it's Haru o Daite Ita, btw), but which manga uses the image in its credits page? But the pictures used in credit pages are generally group-specific, rather than series-specific.

Yes.

(Cont. to your question on mangago),
Yes l, as Calstine said, credit pages are group specific. You might want to check out the groups that worked on this project and associated Djs/side stories. It's not a joke how many groups have worked on it and it'll be likely impossible for you to scan through each and every credit/recruitment page the groups have ever used. Even more unlikely is you coming across the credit pages by a mere Google search since most of the groups are long dead and haven't left behind a proper working site; just some remnants of their works you'll find here and there of "free" hosting sites/servers. Though, I must say I've seen Harudaki, Love and voice, Hochuuami and DP scans use Haru wo daiteita images a lot.
So, you'll probably have to go through dozens of scanlation team credit pages...either those that show up in Google search or skimming through each of their other projects individually in the hope you might come across it.
I thought a reverse image search might work (ya know, I was hoping related images might show up) but it didn't help either.
I don't mean to make this sound depressing...(sorry if I did)
Personally, I suggest going with the flow and reading projects done by these groups on your own pace and if you're lucky enough, you might actually end up finding it. (And do let me know if you do XD)
The worst possible scenario could be that the page you're looking for wasn't used by any of these groups, rather some random group [unrelated to working on [m]Embracing love[/m]].....(which I really hope isn't the case)