Looks like ikezawa_kazuma

If you ask me, looks more like a tanned version of Kino.

Hell, I'm having that gut feeling that this image is photoshopped/edited; especially that biniki (those bikinis?).

Yes, Silfs, this is for sure edited. This picture shows "Kino" from "Kino's Journey". Kino, however, was never drawn nude in the original, not even half-nude.