gotou nao
Artist name: 後藤なお (Gotou Nao)
He has been largely inactive since 2009. While he does keep a Pixiv account and does still post pictures on occasion, they are mostly old pictures. As of June 2022, his Pixiv account is no longer accessible.
The artists Lucie and Moo may be his former assistants/apprentices. Their art style is very similar to his (especially Lucie's). There is even speculation that Lucie may be the same person, but until this is official we're tagging them separately.