Looking for the japanese source of avatars

There is a huge japanese community somewhere ripping stuff at high quality, im assuming it because of this guy with 450 expensive avatars on his account https://ripper.store/avatars?category=author_id&page=4&search=usr_787cb162-0a47-4889-8ff4-b9bb9f3b2804

All of them seem to have proper unity packages not just poorly ripped versions

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