What the organization says it received
Autism Society Japan published its opinion after Mii-chan to Yamada-san reached its final manga chapter. The group says families, disabled people and supporters contacted it with anxiety and discomfort about the work, including reports that the name used for its central character had become a mocking label. The statement is primary evidence that the organization received those concerns and chose to intervene publicly. It is not a population survey, and FanBriefer cannot infer how frequently the insult is used or how every autistic or intellectually disabled reader views the manga.
Why the anime changes the stakes
The society expresses strong concern about the planned adaptation even if it avoids terrestrial television or uses age restrictions. Its argument is about scale and repetition: animation can circulate the character and title beyond the manga's existing readership, potentially strengthening an association the group already considers harmful. That is an advocacy assessment, not proof that the production will cause a specific outcome. No producer or broadcaster response is established by the source, so the honest development is the public objection itself and the reasons the organization gives for it.
The response still missing
The statement asks the companies involved to consider the effects on disabled people and their families, but it does not announce a cancellation, title change, broadcast restriction or formal complaint process. Those outcomes must not be inferred. A production response could materially change the story by explaining consultation, content framing, accessibility work or changes to marketing and distribution. Until then, readers should distinguish the society's documented experience and warning from an independently verified measure of harm, while recognizing that a national advocacy body has placed the issue directly before the adaptation's stakeholders.