These are not fan art. You are looking at the official anime-style drawings of many of the major Harry Potter characters.
As Get News reports, Warner Bros. Japan has officially licensed these illustrations for a series of Harry Potter goods that will go on sale within the country. So far, the designs have been limited to things like folder files, buttons, rubber stamps and keychains.
[Images via Movic]
These designs are apparently Japan-only and scream for either a full-on anime or manga adaptation.
[Image via Get News]
Top images via Movic