All crime is vastly underreported in Japan and a shitton of deaths are ruled as suicide, because their police system is broken as fuck.
Japan’s legal system is also fucked up beyong anything ever. They are a country where “Guilty until proven innocent” is fucking normal. You get accused of something?? you are guilty. its up to you to prove you didnt do it and the accuser has to do jack shit
Japan is a country that tries to pretened very hard that it’s not a complete dystopian shithole, isn’t it?
It was rather terrifying to learn Ace Attorney was actually a satire.
And just like in AA, there’s no jury, the judge is the one who calls the verdict at the end of a trial. Prosecutors can basically present anything they please as evidence. And worst of all, they typically only hold trials for the people who seem the most obviously guilty, which the defense inevitably loses, which is why Phoenix winning all of his cases, let alone his very first, is such a big deal.
Also it’s really REALLY common in Japan for police/prosecutors to falsely evidence. Hence why that’s a recurring theme/plot point in the series
“This dude has a gunshot to the back of the head under really weird circumstances”
“Idunno investigating is hard. Call it a suicide or something”
Actual testimony from police in Japan
Police departments and politicians also have uncomfortably close relationships with organized crime, and it’s not uncommon for detectives and coroners to get called off murder investigations or recieve “suggestions” to prematurely call suspicious deaths suicides because some nice men in suits told the chief that they’ll handle things from here on out.