guys, should i played Succulence 1 ? before this one ? or does it not matter... thanks
It doesn't really matter.
You'd get a few references and have more of a clue as to who the MC is/was at the beginning but it doesn't truly affect the experience so far.
It's a new story and its own game as the MC even has a different job now. Even the combat system and stealth mechanics have changed.
That being said, the first game was pretty awesome and it's rare to find such a gem that actually ends up completed and not abandoned or dragged forever.
Some players were struggling with the combat/levelling and Lust/Sanity systems at first, but it actually was pretty manageable already and it even became quite simple on the final product after a few tweaks by the developer to address the issues.
TL, DR: You don't NEED to play Succulence 1 to enjoy the new game. But if you're into any of the kinks in the list and/or school setting, you definitely SHOULD give it a try, imho.