Love the anime and manga. Hate it that they never finished the translated manga and there are no more seasons rip. I wanna know what happend! its one of my favorites. Please someone translate the rest of the manga!!
This was written 2011 (decades after original parasyte) then was made into anime 2 years after the manga then parasyte adapted in 2014. So if you only count anime then yes this was out first but for the manga parasyte was published wayyyyyyyyyyyyy eariler. Albeit parasyte isn't the original original either. It was inspired by devilman.