[KyoAni Arsonist Said Tsurune Copied His Novel]
Investigators recently released new details about the KyoAni arsonist Shinji Aoba. Apparently Aoba submitted his "high school-life" novel to KyoAni during the studio's submission event back in 2017 but was rejected. After Kotoko Ayano's novel Tsurune got animated by KyoAni, Aoba found an anime scene that resembled to a scene of his novel. He believed the studio stole his idea and decided to commit the most notorious crime in anime history.
Investigators who read Aoba's novel said the arsonist's accusation was an utter imagination. The scene Aoba' referred to was, as investigators described, a typical school setting that appeared in every school anime.
My opinion: Aoba is just mad that his novel got rejected by KyoAni. He sought revenge but hurt dozens of talented souls. Making such an accusation against KyoAni is a sad excuse.