He was working on some drug shit or whatever. Not that uncommon here. I think we have some of his notes on file? It's a requirement so probably...
In all honesty, dude barely talked to ANYONE here. Most of the time he'd just ask for random ingredient recommendations from us, and whenever we'd ask, he'd just say that it's 'for stuff'. With every drop of sincerity I can muster, I have to say he was really fucking weird.

Ludwig doesn't want to sign up for whatever that therapy thing is, but he HAS to. The curiosity would eat him from the inside out.