This was reported by Kyodo, citing sources.
As the man noted, he went for it, as he understands that he will still be sentenced to death.
It is clarified that Oba said that he chose the branch number 1 of the studio, as the largest number of employees work there. According to him, he wanted as many people as possible to suffer from his actions.
The Japanese also admitted that he took with him a hammer and kitchen knives in order to “fight off people who might interfere with him.”
On July 18, a man set fire to an anime production studio in the Japanese city of Kyoto. Later, he explained the motive of his act - according to him, he went for it, as the studio stole the idea of the work from him.