Shinji Aoba broke into the building, spread gasoline around the ground floor, lit it and shouted "drop dead" on the morning of July 18, 2019, survivors said
Shinji Aoba broke into the building, spread gasoline around the ground floor, lit it and shouted "drop dead" on the morning of July 18, 2019, survivors said AFP

A Japanese court found guilty on Thursday the perpetrator of a 2019 arson attack on an animation studio that killed 36 people, with sentencing expected later in the day, local media reported.

Shinji Aoba, 45, who himself nearly died in the fire, is widely expected to be given the death sentence.

The arson attack four-and-a-half years ago at the studios of Kyoto Animation was Japan's deadliest crime in decades, stunning the anime industry and its fans around the world.

Aoba broke into the building, spread gasoline around the ground floor, lit it and shouted "drop dead" on the morning of July 18, 2019, survivors said.

Many of those killed were young, including a 21-year-old woman.

"It is going to be a guilty verdict, but I will deliver the main line at the end," the chief judge said on Thursday, according to public broadcaster NHK.

Victims were found on a stairwell to the roof, suggesting they were overcome as they desperately tried to escape.

"There was a person who jumped from the second floor... but we couldn't rush to help because the fire was so strong," one woman told local media at the time.

"It was like I was looking at hell."

More than 30 others were injured, with firefighters calling the incident "unprecedented" and saying that rescuing people trapped inside was "extremely difficult".

Aoba, who was arrested near the scene, faces five charges including murder, attempted murder and arson, and prosecutors are seeking capital punishment in the high-profile trial.

His lawyers have entered a plea of not guilty, saying he "did not have the capacity to distinguish between good and bad and to stop committing the crime due to a mental disorder".

But on Thursday, the judge ruled Aoba was "neither insane nor suffering diminished mental capacity at the time of the crime", NHK reported.

"I didn't think so many people would die, and now I think I went too far," Aoba told the Kyoto District Court when the trial opened in September, media reports said at the time.

Aoba had a "delusion" that the studio known by its fans as KyoAni stole his ideas, prosecutors said, a claim the company has denied.

Aoba suffered burns in the fire covering 90 percent of his body and reportedly needed 12 operations.

He regained consciousness weeks later and was said to have sobbed with relief after undergoing a procedure that restored his ability to speak.

Japan is one of the few developed countries to retain the death penalty, and polls show public support is high.

Criticism from rights groups is rife, with inmates often informed of their imminent execution on the morning of the day they are to be hanged.

The last execution was in 2022 and, as of December, 107 people were on death row.

The highest-profile execution in recent years was in 2018, when Japan hanged 13 people -- including the guru of a doomsday cult -- responsible for the 1995 sarin attacks on Tokyo's subway.

Founded in 1981 by a husband and wife, KyoAni is a household name for anime fans, responsible for popular TV series including "The Melancholy of Haruhi Suzumiya" and "K-ON!"

After the attack, there was shock and grief in Japan and worldwide, with Apple CEO Tim Cook tweeting that KyoAni's artists "spread joy all over the world and across generations with their masterpieces".

A US animation company raised $2.4 million via crowdfunding to help the firm get back on its feet.

For families of the deceased, the pain of their loss remains excruciating to this day.

"I should have told her not to go to work that morning," the mother of 49-year-old Naomi Ishida told the Mainichi Shimbun daily this week.

"Even if he gets the death penalty, Naomi and others won't come back. I feel empty," said the woman, whose husband died a month before the first hearing.

Shinji Aoba is widely expected to be given the death sentence
Shinji Aoba is widely expected to be given the death sentence AFP