
Uziga Waita, normally operates under the circle Uzigaya. Uziga Waita is the penname used for all adult materials He is most known for his prolific career producing snuff, guro, and ryona works, as well as peppering with torture, lolicon, shotacon, amputeeism, and just about any other gruesome and dark tag you can think of. He tends to toss in lot's of black humor as well, which offsets his gruesome work.
He is likely most well known for his work Mai-chan no Nichijou, which features toddlercon, lolicon, shotacon, CBT, torture, abortion, rape, and amputeeism to name some tags, mostly due to how extreme the content is, particularly in the last chapter.
Uziga is still active today, producing doujins featuring popular series such as Attack on Titan, and Kancolle, of course using his typical style.
His homepage contains many of his works and a content warning in the first page. He gained a degree of infamy on the Futaba and recently 4chan image boards. In Japanese, the phrase uji ga waita means "the maggots have gushed forth" (蛆が湧いた), although this would be written with different kanji than those he uses for his name.
Circle(s):
Igyou Nami Club (異形波倶楽部).
Mandaruma (まんだるま) with Ureshino Megumi.