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He meets the WP:RY#Deathscriteria but prior to his death his article was barely a stub:

Yoshito Usui (臼井儀人, Usui Yoshito?, born 21 April 1958 in Shizuoka Prefecture) is a Japanese manga artist known for being the author of the popular Japanese manga Crayon Shin-chan.  Plus a short list of his works.

Most of his articles in other languages are of a similar size, even after his death, and most have no citations. This would seem to indicate that he is not particularly notable, and certainly insufficiently notable for this article. Yet another case of a person whose unusual/unexpected death is more notable than they themselves are/were. Cheers,   (Talk Contribs)"