Japan (AFP) - The world’s longest-serving death row prisoner hears from a Japanese court on Thursday if he will again face execution or finally be acquitted, a decade after obtaining a retrial of his murder conviction.

Iwao Hakamada, 88, was jailed under the death penalty for 46 years until he was freed in 2014 pending retrial.

The former boxer was first convicted in 1968 of killing his boss, the man’s wife and their two teenage children.

But over the years, questions arose over fabricated evidence and coerced confessions, sparking scrutiny of Japan’s justice system, which critics say holds suspects “hostage”.

Hundreds of people queued in the morning at the Shizuoka District Court to try and secure a seat for the verdict in the murder saga which has gripped the nation.

Hakamada’s health is delicate and he was not expected to attend, but his 91-year-old sister Hideko, who often speaks for him, was welcomed by a cheering crowd.

Smiling in a white jacket, she walked towards the courthouse with the defence team, occasionally stopping to thank supporters.

“For so long, we have fought a battle that has felt endless,” Hideko had told reporters in July.

“But this time, I believe it will be settled.”

Prosecutors have said they remain convinced of his guilt beyond reasonable doubt.

- Fighting ‘every day’ -

Japan is the only major industrialised democracy other than the United States to retain capital punishment, a policy that has broad public support.

Hakamada is the fifth death row inmate

After decades of detention, mostly in solitary confinement, Hakamada sometimes seems like he “lives in a world of fantasy”, according to

Speaking to AFP in 2018, Hakamada underlined his ongoing battle to obtain an acquittal, saying he felt he was “fighting a bout every day”.

“Once you think you can’t win, there is no path to victory,” he said.

Outside the court, Hakamada supporters held flags and banners calling for a not-guilty verdict.

Atsushi Zukeran, wearing a T-shirt saying “Free Hakamada Now”, told AFP he was “absolutely certain he will be acquitted” given the qualms over the evidence.

But given how long the affair has dragged on, with Hakamada maintaining his innocence throughout, “part of me wouldn’t be able to celebrate the acquittal entirely,” Zukeran said.

“His case is a painful reminder of how Japan’s criminal justice system must change,” he added.

- Blood and miso -

Although the Supreme Court upheld Hakamada’s death sentence in 1980, his supporters fought for decades to have the case reopened.

A turning point came in 2014 when a retrial was granted on the grounds that prosecutors could have planted evidence, and Hakamada was released from prison.

Legal back-and-forth, including a pushback by prosecutors, meant it took until last year for the retrial to begin.

Hakamada initially denied having robbed and murdered the victims, but confessed following what he later described as a brutal police interrogation that included beatings.

Central to the trial is a set of blood-stained clothes found in a tank of miso – fermented soybean paste – a year after the 1966 murders, used as evidence to incriminate Hakamada.

The defence accuses investigators of a set-up, as the red stains on the clothes were too bright, but prosecutors say their own experiments show the colour is credible.

In Japan, death row prisoners are notified of their hanging only a few hours in advance.

As of December, 107 prisoners were waiting for their death sentences to be carried out. It is always done by hanging.

Hakamada’s case is “just one of countless examples of Japan’s so-called ‘hostage justice’ system”, Teppei Kasai, Asia programme officer for Human Rights Watch, told AFP.

“Suspects are forced to confess through long and arbitrary periods of detention” and there is often “intimidation during interrogation”, he said.