Nah Japanese is terrible to decode, at least for me. Just ソ(so) vs ン(n) is driving me up the wall sometimes, especially in mags where they use the same character for both kana, argh. And those are simple kana. With complex kanji if the manga scan is only a little too dark or the resolution a little too low I have to use a lot of guesswork to find the kanji, if ever.
Do Japanese OCR programs even exist? I can't seem to find any.