Chapter 429 was okay, this one was better. Gray being a double agent was a nice twist/troll how ever you wanna call it. Now Frosch's death, F!Rogue said Gray killed him, but we don't know how exactly, either it was accident a or on purpose. So regardless of what happened F!Rogue blames Gray for it, either he killed him, or Frosch was caught (how Natsu, Happy and Lucy were in 429), and executed, and F!Rogue blames Gray, because he stayed undercover for this mission. Saw that on some site, so originally not mine :D