((Ooo, Arix as the bad guy? So sad, but ... that would be interesting!

That's right. There was that mission for two Pyrates, and both Hotaru and Derek accepted it. Rayn followed them out to stop her brother, or something, and Isa was likely out there looking for some artifacts. And then there's a cave in, which leaves both Derek and Rayn stuck together, and Hotaru is freaking out. And then there's Isa, nearby and able to run into Hotaru again. How does that sound?))