>https://thewaterducts.sakura.ne.jp/cgi-bin/bbsnote5/index.html
yup there's a lot of guro, and some cute hidden gems as well. also on that site are archives of previous oekaki boards (I assume) that go back quite a few years. it's always interesting to think that some of these excellent pieces were made by an artist for the sole viewing pleasure of maybe a half-dozen commenters and an unknown amount of lurkers. they must truly love making art for its own sake