This torrent has all eight volumes of the Old Boy manga series, of which the 2003 Korean movie Oldboy was based upon.
The announced movie by Spielberg starring Will Smith is "...Not (based on) the film though, it's the original source material. There's the original comics of "Oldboy" that they made the first film from. And that's what we're working from, not an adaptation of the film."
note: for some reason, uploading the torrent with everything uncompressed gave me an error, so I had to rar each volume up for it to allow me to upload it.