Artist.
Low-resolution versions of some of his/her artworks were posted by an Anonymous to some topics/threads of 2channel's Art & Artists Board.
(E.g. 'Simply Enjoy Drawing and Uploading' thread and 'Those Who are Old Enough to Know Better, are Creating Artworks (Beginners are Welcome!)' thread)
Danbooru curreltly regards them as the same person.
Artist name: natsu
