Is it worth watching?
& is it true to anime?
I'm a big fan of the serie.
If you liked the anime Mushi-Shi this is just a live action version. Even uses the same stories from that show. And Travis Willingham does the English dub for lead character Ginko in the anime and this live action film.
Is it worth watching? Frankly the stories get repetitive real fast. Ginko's like a travelling doctor, curing people of their infections and problems with the mystical Mushi.
Is it true to the anime? The opening scenes are episode 3: "Tender Horns", and it goes on from there.
There's nothing offensive here, but there isn't anything that would make me watch it again.