Hibiki only addresses Dita directly by name three times in the second season (Vandread: Second Stage). Once in "Red Angel" when Dita is chasing him in her pajamas about visiting her room right after their meeting about a shared dream. Then he says it twice in "Trust": when Dita is rushing in to save his Vanguard as it fights off the planet killer's self-destructive gateway; and when he's inviting Dita onto the shuttle to Taraak at the very end.
Space-alien-happy Dita uses the "alien" hand gesture from Close Encounters of the Third Kind when she meets Hibiki, (who she calls "Mr Alien") for the first time.