Katharsis was an old OLD thing back in the late 90's that ran the gauntlet of everything immaginable that man could do to his fellow man (mostly male) . It was collections of excellent drawings by sickly talented artists , along with related story lines - all of which you could order by mail. - but by no means was it anything 'pedo'! But it's all long gone now.
Some of the drawings are still found on various profiles of members here and elsewhere.
I recall katharsis. Much of it was femdom related, with women killing men. No pedo as far as I recall, but very heavy on gore. Mainly drawings. Some stories. t has been gone now for years.
Some issues are archived at seantheartist.com. Surprised you don't know about it, meatpie. You would probably have liked it. It contained many stories like this.
Katharsis.net was the best gay torture, cbt, castration, killing, snuff and execution pay site in the net by owner John Randell, but he dies by diabetic-disease RIP
I have thousands of the pictures mostly (never cared for the stories) including many rarities, I'm slowly posting some of Martin. Those who wish to trade, PM me if you have similar.