Be afraid. Be very afraid
Conan's eyes widened in shock as he realized that Ran and Kazuha were conversing in perfect English with no trace of a Japanese accent. His rising fear eased when he spotted Heiji trotting towards them.
"Harley! Where have you been?" Kazuha chided him.
"Sorry," Heiji apologized with a weak grin. "I was trying to call Jimmy, but he wouldn't answer his phone."
Realization of the situation hit Conan with the force of a sledgehammer. "They did it. They finally did it," he whispered as his small hand slipped out of Ran's while he sank to the ground in shock. "Dub you!" he yelled in frustration. "Dub you all to English!"
"What'd he say?" Ran asked, watching Conan's unusual antics with concern.
"Beats me," Heiji answered, shrugging. "I don't know Japanese."