Following the sudden passing of Akira Toriyama on March 1, 2024, Dragon Ball scriptwriter Takao Koyama, has offered some insight into Toriyama’s health on his personal Twitter account.

In a series of tweets, Koyama first expressed concern regarding the cause of death, a subdural hematoma, which often results from a serious head injury, questioning whether Toriyama had experienced a head injury.

He questioned, “Subdural hematoma. I wonder if you hit your head?“

In a follow-up tweet, he revealed that Toriyama had been ill since last year, acknowledging the challenges he may have faced during his illness.

“It seems you’ve been suffering from illness since last year. That’s unfortunate. It must have been quite difficult for you. I was also hospitalized for 100 days last year, so I can empathize with you.“

Koyama went on to credit Toriyama for giving his career as a screenwriter a significant boost, thanks to his inclusion in both Dr.