The Great Passage (or Fune wo Amu) is a novel by Shion Miura. It’s getting an anime next season, featuring character designs by the Rakugo Shinjuu artist and a spot in the Noitamina TV block. I suppose most anime viewers should have it pegged as a mature and down-to-earth drama, especially after seeing the trailers. This was my impression of the anime as well.
As it turns out, the anime’s style is only one interpretation of the novel’s story, and the live action film directed by Yuya Ishii appears to be quite a different beast, judging by its trailer. It depicts the story as a quirky romcom, complete with a socially inept male protagonist, before taking a melodramatic turn. The light-hearted approach to weighty topics is reminiscent of the “trendy dramas” of the 1980s and 1990s. (It’s worth noting that the novel, despite being published in 2011, is set in the 1990s.)
I haven’t read the original novel, so I can’t tell you how faithful either adaptation is to the story. Nor have I watched the anime or film themselves. I only have access to the trailers, so I can only comment on how these adaptations have been pitched to their audiences. The two trailers strike a completely different tone and feel, to the extent that I initially found it hard to believe that they were adaptations of the same story. This says something interesting about the leanings of their directors, as well as the perceived target audiences of the live-action film and television anime in Japan.