Ren wasn't worried about going to White Unicorn's HQ since… obviously, no one in their right mind would try to lay a finger on him—not when Pii existed. And Ren was even less afraid of unleashing the little guy if his life was ever threatened.
Besides, he doubted anyone here even had the capability to take him down in the first place. Even if every single member of White Unicorns tried to kill him, it would be like attacking a mini Boss. Ren's ATP was simply too high. He wouldn't go down easily.
The request he received from White Unicorns was straightforward enough: they wanted his help clearing Thunder Cave. Apparently, their goal was to clear all Elemental Caves before the next Guild War started. They were in a race to collect second-level elemental spells like [Flame], [Hydro], [Gust], [Earthquake], [Thunder], and [Blizzard].
