Why would you consider investing in something you don't understand?
Here's a big warning flag to me. Google: direct fractional investing
Top hit? This thread. Created four hours ago.
That's...not a good sign.
Google it in quotes. There's literally two links, both from the same one guy, Dennis Bethel, talking about it, both created this month.
No established track record? Something completely brand new made up? Using handwaving vague language intended to confuse? Sounds like something I'd stay far, far away from.