Haibara developed an antidote, and she and Conan returned to their adult bodies.
“I'm finally back to normal! Being stuck in a child's body was so frustrating!” Kudo stretched.
“Really? Why isn't the great detective rushing off to see his dear big sister Ran?” Miyano asked, raising an eyebrow.
“Oh, I'll see her tomorrow. It'll be a surprise.” Kudo smiled. “I really owe you one, Haibara... I mean, Shiho Miyano.”