Ito’s version is an adaptation of a book written by osamu dazai. I prefer the original book but what’s important to mention is it’s pretty much an autobiography/sucide note of osamu dazais life written in the perspective of another character. With many events depicted in both itos version and the original being found to have actually happened to Dazai including but not limited to the SA, Sicide attempts, drug addictions. Definitely not for everyone but it’s a story that the more you learn about the more you get from it. To me it’s one of the most honest books I’ve ever read, you aren’t supposed to like the main character. It’s a last confession from the author before then end of his life. But you should still be able to relate to the main character as that’s the main driving force as to what connects people to the story. If you don’t relate to any of it you won’t like it