Cartoon characters who suffered nosebleeds after a visit to the Fukushima No. 1 nuclear plant are turning into a headache for manga publisher Shogakukan.

Locals are apparently angry about the "misleading" depictions in an episode of the popular manga series "Oishinbo" published Monday in the weekly Big Comic Spirits magazine.

Visiting the stricken plant two years after the 2011 nuclear catastrophe, a group of characters, all newspaper journalists, are momentarily exposed to hourly radiation levels of 1,680 microsieverts. After their tour, which takes them near the plant's six reactors, lead character Shiro Yamaoka begins to complain of "extreme exhaustion" as well as sudden nosebleeds that span days. His colleagues confess to suffering similar symptoms.