I remebe it started with a young boy that later on recieved a cursed sword. That cursed sword had sometype of demon in it or something.
That demon has a RIDICULOUS name..i just cant remebe
R it...

was it here or on some other site? if it was here: male young sword comic

Bit late to the party, but I think this is the comic you were looking for.

Harubon 6: Outcrosser by Harusuke - https://e621.net/pools/1413

Don’t know if you’re still trying to find it or not, so I figured I would add the link here since it took me three days to find it myself (and with a demon name like Dickpenis, I don’t think I’ll be forgetting it again).