Japan is a bit of both. Prosecutors are extremely reluctant to bring cases to court if a conviction isn't guaranteed (losing a case is extremely embarrassing),

Japan is a bit of both. Prosecutors are extremely reluctant to bring cases to court if a conviction isn't guaranteed (losing a case is extremely embarrassing), and for this reason judges almost always side with them because they assume a prosecutor wouldn't bring a case against someone who is not definitely guilty. Basically in Japan they err on the side of letting criminals roam free if it's not an open-and-shut case in front of a judge, but it sucks for the (very few) who are wrongfully convicted, because nobody will believe them. Especially because you'll never get the government to admit they wrongfully convicted someone.