774_(nanashi)
Artist.
Used to update very slowly (once every 1-3 months) fueling rumors that he is a pen-name for a well known manga-ka.
Somewhat infamous for creating 1 shots that look like they should be part of a series, then never creating part 2, causing no end of complaining from newbies on the various *chan sites.
Formerly a guro artist who delved into exhibitionism and humiliation themes. Has reformed since his original creation Ijiranaide Nagatoro-san debuted and became popular.
Artist name: "774" or 七七四 (Nanashi)
Circle name: 774ハウス (774 house / nanashi house)