If Trald's at your home you can't actually talk to him, and if you talk to Ferron at your home, he brings up Bloodthirster even if you haven't actually seen the event where you meet him yet.
I can't seem to meet Harold at the bar after seeing him in the gym, and I can't for the life of me find Darius at the gym.
Speaking of the gym, Blood's 69 event seems to fuck with date/time sometimes? While looking for Darius I kept having Blood's scene ending at 14:30 the next day, regardless of when it started. The frequency seemed a bit much too, especially since I couldn't refuse.